Plaintiffs Reyn’s Pasta Bella, LLC; Jeffrey Ledon Deweese; Barry Leonard, dba Critter Fritters; and- Hat-In-The-Ring Inc., dba Eddie Rickenbacker’s appeal from the dismissal of their complaint seeking damages and injunctive relief for Defendants’ alleged antitrust violations. They claim that Defendants Visa USA, Inc. (Visa); MasterCard International, Inc. (MasterCard); Bank of America, N.A. (USA); Wells Fargo Bank NA; and U.S. Bank, a subsidiary of U.S. Bancorp fixed prices on credit— and debit-card transactions in violation of section 1 of the Sherman Act, 15 U.S.C. § 1 . The district court found that Plaintiffs’ claims were released by the class action settlement in In re Visa Check/Mastermoney Antitrust Litig., 297 F.Supp.2d 503 (E.D.N.Y.2003) (Wal-Mart I), aff'd sub nom., Wal-Mart Stores, Inc. v. Visa USA Inc., 396 F.3d 96 (2d Cir.2005) (Wal-Mart II). We have jurisdiction under 28 U.S.C. § 1291 and we affirm. We hold that issue preclusion bars Plaintiffs from re-litigating the Wal-Mart courts’ determination that Plaintiffs’ price- fixing claims were properly released. We also hold, in the alternative, that Plaintiffs’ claims are extinguished by the Wal-Mart settlement because the two actions share an identical factual predicate. Since Plaintiffs chose not to file an amended complaint based on acts occurring after the time period covered by the Wal-Mart release, the district court correctly dismissed their action.

Facts and Procedural History

Plaintiffs here purport to represent all merchants nationwide who currently have a contract with one or more of Visa and MasterCard’s member banks for credit and debit transactions. To understand Plaintiffs’ claims, it is necessary to describe how a consumer pays for goods with a credit card or debit card.

Visa and MasterCard do not issue credit cards and debit cards directly. Rather, they coordinate the issuance of credit and debit cards by their members, which include many of the nation’s largest banks, under common card brands and rules.

Their member banks play two roles in a sale of goods to a Visa or MasterCard user. First, one of their members (the issuing bank) issues the consumer his or her credit or debit card. Second, it or another Visa or MasterCard member bank (the acquiring bank) contracts with the merchant to accept payment through Visa or MasterCard.

As described in the footnoted hypothetical, the typical credit-card transaction involves more than a consumer buying goods from a merchant. The transaction is actually a chain of transactions among the merchant, who sells the goods to the acquiring bank, who sells the goods to the issuing bank, who sells the goods to the consumer. At each step, the buyer must purchase the goods at a price lower than its selling price — or make no profit.

Plaintiffs-merchants allege that price-fixing by Defendants and their member banks of the interchange rate at 1.25% results in the merchant upstream receiving less for its goods from the acquiring bank. Less, that is, than the merchant would receive were there to be competition at the interchange-rate level and the rate were to be driven down to 1.00% or less by such competition. The lower the cost of the interchange rate, the less would have to be taken (“discounted”) from the merchant. Plaintiffs thus claim to have stated a cause of action for price-fixing under section 1 of the Sherman Act, 15 U.S.C. § 1 .

Defendants moved to dismiss Plaintiffs’ complaint for failure to state a claim. The court granted in part, and denied in part, Defendants’ motions. Pertinent here, the court held that Plaintiffs had stated a claim for price-fixing on the theory described above. See Reyn’s Pasta Bella, 259 F.Supp.2d 992, 1000-01 (N.D.Cal.2003). The court dismissed or struck each of Plaintiffs’ other substantive allegations. See id. at 1001-04 .

Meanwhile, in the Eastern District of New York, the lead plaintiffs in the Wal-Mart class action had negotiated a global settlement of that class’ claims. See Wal-Mart I, 297 F.Supp.2d at 508 . There, the court had certified a nationwide class of plaintiffs under rule 23(b)(3). See In re Visa Check, 192 F.R.D. at 90. The class consisted of all merchants who were forced to accept Visa and MasterCard’s debit cards as a condition of accepting their credit cards from October 25, 1992 to June 21, 2003. See id.; CV-96-5238, Notice of Settlement of Class Action (E.D.N.Y. June 13, 2003). The Wal-Mart class thus included every member of the putative class action that Plaintiffs bring here. In Wal-Mart, the plaintiffs alleged that Visa and MasterCard obtained excessive discount fees (1.6% in the hypothetical above) by “tying” their debit cards to their credit cards and conspiring to monopolize the debit-card market. See Wal-Mart I, 297 F.Supp.2d at 507 . On the eve of trial, the Wal-Mart class action settled for more than three billion dollars and significant injunctive relief. See id. at 508 . The Wal-Mart settlement agreements include releases that purport to absolve Visa, MasterCard, and the Banks of all antitrust liability arising out of conduct, prior to January 1, 2004, that is related to the claims asserted in the Wal-Mart class action.

Plaintiffs were Wal-Mart class members. Rather than opt out of the WalMart class, they appeared through counsel at the settlement fairness hearing and raised several objections. On December 19, 2003, the Wal-Mart I court approved the settlement over their objections. See Wal-Mart I, 297 F.Supp.2d at 526 , aff'd, 396 F.3d at 124 . In approving the settlement, the Wal-Mart I court expressly determined that Plaintiffs’ price-fixing claims were released. See id. at 513-15.

In June 2003, Defendants renewed their motions to dismiss and asserted that the release in the proposed Wal-Mart settlement would bar Plaintiffs’ claims once it was approved. On October 3, 2003, the district court heard argument on the effect of the Wal-Mart release. Then, on January 14, 2004, the court ordered Plaintiffs to show cause why their action should not be dismissed. After further briefing, the court dismissed Plaintiffs’ complaint with prejudice on March 4, 2004. Plaintiffs filed a timely notice of appeal.

Analysis

The application of issue preclusion and claim preclusion is reviewed de novo. Frank v. United Airlines, Inc., 216 F.3d 845, 849-50 (9th Cir.2000). While the court’s two-page order of dismissal does not explicitly state that it is applying issue preclusion, we may affirm on any ground that is supported by the record. See, e.g., McClure v. Life Ins. Co. of No. Am., 84 F.3d 1129 , 1133 (9th Cir.1996).

First, we hold that Plaintiffs may not collaterally attack the Wal-Mart settlement. “[A] class member who is represented by counsel during a class action settlement hearing ... cannot attack the settlement collaterally....” Dosier v. Miami Valley Broadcasting Corp., 656 F.2d 1295, 1299 (9th Cir.1981) (citing Hansberry v. Lee, 311 U.S. 32, 42-43 , 61 S.Ct. 115 , 85 L.Ed. 22 (1940)). Here, Plaintiffs’ appearance through counsel at the Wal-Mart fairness hearing binds them to the WalMart settlement and all of its preclusive effects.

The district court correctly dismissed Plaintiffs’ action as barred by the Wal-Mart settlement. Issue preclusion bars relitigation of issues adjudicated in an earlier proceeding if three requirements are met:

Kourtis v. Cameron, 419 F.3d 989, 994 (9th Cir.2005).

First, the Wal-Mart courts’ decision that the settlement covered, and thereby released, Plaintiffs’ claims in the Northern District of California was necessary to their final judgment that approved the Wal-Mart settlement. The issues Plaintiffs raised all relate to the Wal-Mart settlement, its scope, and its substantive and procedural fairness. In approving the settlement as “fair, reasonable, and adequate” under Federal Rule of Civil Procedure 23(e)(2), the Wal-Mart courts necessarily had to adjudicate the objections Plaintiffs raised, including whether the Wal-Mart settlement released Plaintiffs’ price-fixing claims.

Second, the Wal-Mart courts’ approval of the settlement constituted a final judgment on the merits. See Green v. Ancora- Citronelle Corp., 577 F.2d 1380, 1383 (9th Cir.1978).

Third, Plaintiffs were parties to the Wal-Mart proceeding by virtue of their membership in the class and appearance through counsel at the fairness hearing. See Dosier, 656 F.2d at 1299 . Thus, we find all three elements of issue preclusion to be satisfied.

Plaintiffs argue against application of issue preclusion solely from the maxim that a court rendering a judgment cannot predetermine its res judicata effects. See Phillips Petroleum Co. v. Shutts, 472 U.S. 797, 805 , 105 S.Ct. 2965 , 86 L.Ed.2d 628 (1985) (referring to this maxim in dicta); In re Domestic Air Transp. Antitrust Li-tig., 148 F.R.D. 297, 345 (N.D.Ga.1993) (reciting this maxim in opinion on the fairness of a class-action settlement, but nonetheless opining that certain claims were not released). However, Plaintiffs brought about the Wal-Mart courts’ predetermination of their judgments’ preclusive effects by raising the issue in the Wal-Mart litigation as opposed to waiting to attack collaterally those judgments in the Northern District of California. We have rejected arguments like that of Plaintiffs here in Class Plaintiffs v. City of Seattle, 955 F.2d 1268 , 1279 n. 7 (9th Cir.1992), where we reasoned:

Here, Plaintiffs chose to challenge directly in the Wal-Mart litigation whether the settlement released their claims; they do not get a second bite at the apple to challenge collaterally the same issue in the Northern District of California.

We believe issue preclusion is fully applicable to the Wal-Mart courts’ determination that Plaintiffs’ price-fixing claims fell within the scope of the release. See Nottingham, Partners, 925 F.2d at 33 (“The [certifying court] ... explicitly found that the claims here asserted arose out of the same transaction as the claims in the class action, and this determination is equally entitled to preclusive effect.” (citation omitted)). Seven years into the Wal-Mart I litigation, the district court reviewed the claims that are now before us and found that they shared an identical factual predicate with the claims asserted in Wal-Mart. See Wal-Mart I, 297 F.Supp.2d at 513-14 . Given the Wal-Mart court’s long familiarity with the litigation, it is at least as well-equipped as we are to determine the scope of the release. Moreover, Plaintiffs had a full opportunity to be heard on this issue by the Wal-Mart courts. They chose not to press this issue on appeal to the Second Circuit. See Wal-Mart II, 396 F.3d at 107 n. 14 (noting that Plaintiffs abandoned the issue). Since all of the elements of issue preclusion are met, we hold that Plaintiffs are collaterally estopped from relitigating the scope of the release here.

Even if issue preclusion were not applicable, we would nonetheless find that Plaintiffs’ claims were released. “The weight of authority holds that a federal court may release not only those claims alleged in the complaint, but also a claim ‘based on the identical factual predicate as that underlying the claims in the settled class action....’” Class Plaintiffs, 955 F.2d at 1287 -89 (quoting TBK Partners, Ltd. v. Western Union Corp., 675 F.2d 456, 460 (2d Cir.1982)). A class settlement may also release factually related claims against parties not named as defendants, such as the Banks here. See id. Thus, the Wal-Mart release encompasses Plaintiffs’ claims if they arise from an identical factual predicate as the claims asserted by the Wal-Mart class.

As discussed above, Plaintiffs’ claim is that Defendants’ uniform interchange rates caused the class members to pay excessive merchant-discount fees for the use of credit and debit cards. They argue that the uniform interchange rates “set a floor” under the merchant-discount rates, thereby keeping them above the price that would obtain in a competitive market.

In the operative class complaint in Wal-Mart, the plaintiffs sued Visa and MasterCard on two theories of antitrust liability. First, the Wal-Mart plaintiffs claimed Visa and MasterCard’s “honor-all-cards” rule, which required merchants to accept Visa and MasterCard debit cards as a condition of accepting their credit cards, was an unlawful tying arrangement. Second, they claimed that Visa and MasterCard, through various practices including the fixing of the interchange rate, conspired to monopolize the debit-card market. In other words, the Wal-Mart plaintiffs complained that Defendants were extracting monopoly profits through the tying arrangement and unlawfully attempting to control the debit-card market.

While the Wal-Mart plaintiffs focused largely on the Defendant’s actions in the debit-card market, they claimed that Defendants’ anti-competitive conduct raised the discount fees in both the debit-card and credit-card markets. First, the Wal-Mart plaintiffs expressly alleged that Visa and MasterCard’s member banks collectively fixed the interchange rate and that the fixed interchange rate accounted for the bulk of the merchant-discount fees. See CV-96-5238, Second Amended Consolidated Class Action Complaint 45 (E.D.N.Y. May 26, 1999). Second, the notice of the pending Wal-Mart class action informed the class members that plaintiffs were seeking damages that the excessive merchant-discount fees on credit and debit transactions had caused the class. See CV-96-5238, Notice of Pendency of a Class Action 3 (E.D.N.Y. June 21, 2002). Third, in litigating their section 1 claim, the Wal-Mart plaintiffs sought to prove that the tying arrangement elevated interchange rates for credit cards and debit cards. See, e.g., In re Visa Check, 192 F.R.D. at 74-76 (summarizing the duel of experts on whether credit card interchange rates would be higher or lower in the absence of the tying arrangement). As to their section 2 claim, the Wal-Mart plaintiffs argued they had standing to challenge Defendants’ attempted monopolization because the elevated interchange fees harmed them directly. See CV-96-5238, Memorandum of Law in Opposition to Defendants’ Motions for Summary Judgment and Motion for Partial Summary Judgment at 26 n. 62 (E.D.N.Y. July 5, 2000). Fourth, the Wal-Mart settlement compensated class members, including Plaintiffs here, in proportion to the excess fees they paid on credit and debit transactions. See Plan of Allocation § 3.1, CV-96-5238, (E.D.N.Y. Aug. 18, 2003).

Thus, the Wal-Mart class action was predicated on the harm merchants suffered from the elevated interchange fees caused by Defendants’ anti-competitive conduct. While Plaintiffs seek to hold Defendants hable by positing a different theory of anti-competitive conduct, the price-fixing predicate (price-fixing interchange rates) and the underlying injury are identical. Therefore, Plaintiffs’ claims were extinguished by the Wal-Mart settlement. See, e.g., Howard v. America Online, Inc., 208 F.3d 741, 746-47 (9th Cir.2000) (settlement of class action raising state-law claims for unfair billing practices released RICO claims based on the same practices).

Next, Plaintiffs argue the Wal-Mart release does not bar any claims based on Defendants’ alleged fixing of the interchange rates after January 1, 2004. We need not address the question because Plaintiffs have failed to allege any such claims. “[T]he general rule in private antitrust actions is that the plaintiff may not recover damages arising from acts committed after the filing of the complaint, even when those acts are alleged to be part of a continuing conspiracy or course of conduct.” William Inglis & Sons Baking Co. v. ITT Cont’l Baking Co., 668 F.2d 1014, 1056 (9th Cir.1981). Here, Plaintiffs last amended their complaint on May 16, 2003. Thus, their complaint is limited to seeking damages arising from acts committed before that time.

Plaintiffs’ prayer for injunctive relief under section 16 of the Clayton Act, 15 U.S.C. § 26 , does not change this analysis. It is true that Plaintiffs’ Second Amended Complaint refers to “continuing” harm and “continuing” acts by the Defendants, such as are required for injunctive relief under the Clayton Act. However, a plaintiff does not have a stand-alone cause of action under 15 U.S.C. § 26 . See, e.g., Catlin v. Washington Energy Co., 791 F.2d 1343, 1350 (9th Cir.1986). Therefore, Plaintiffs’ prayer for injunctive relief is insufficient to state a claim based on acts committed after January 1, 2004; the remedy, if any, lies in the role of supplemental pleading under Fed. R Civ. P 15(d). See William Inglis & Sons Baking Co., 668 F.2d at 1056-58 .

Although Plaintiffs’ complaint is susceptible of amendment, we generally will not remand with instructions to grant leave to amend unless the plaintiff sought leave to amend below. See Alaska v. United States, 201 F.3d 1154, 1163-64 (9th Cir.2000). Plaintiffs here did not request leave to amend from the district court, despite having the opportunity after the district court ordered them to show cause. Therefore, we decline to remand with instructions to grant leave to amend. If Plaintiffs wish to state a claim based on Defendants’ alleged price-fixing after January 1, 2004, their proper course is to file a fresh complaint.

Plaintiffs also argue that the Wal-Mart settlement is void for illegality. They offer no authority or explanation for the sweeping proposition that an antitrust settlement is void if it fails to enjoin future violations in perpetuity. We therefore reject Plaintiffs’ void-for-illegality argument.

Finally, Plaintiffs request that we judicially estop Defendants from relying on the Wal-Mart release. As noted above, Plaintiffs raised this issue in their brief before the Second Circuit in Wal-Mart II. While the Second Circuit did not explicitly address the issue, it necessarily declined to apply judicial estoppel in affirming the Wal-Mart I court’s conclusion that Plaintiffs’ claims were released. Therefore, this issue is also precluded by the final judgment in Wal-Mart. See United States v. Arnett, 327 F.3d 845, 848 (9th Cir.2003) (reasoning that issue preclusion applies when the decision from a prior proceeding implicitly decided the issue to be collaterally estopped).

In conclusion, we affirm the district court’s dismissal with prejudice. We apply the doctrine of issue preclusion to bar Plaintiffs from relitigating their objections to the Wal-Mart settlement. In the alternative, we hold that the Wal-Mart release extinguishes Plaintiffs’ claims because they arise from the same factual predicate and span the same time period. Therefore, the district court correctly found Plaintiffs’ claims to have been extinguished by the judgment of the Wal-Mart courts.

Requests for judicial notice GRANTED; order of dismissal AFFIRMED.

. Unless otherwise noted, all statutory references are to 15 U.S.C. . The following background on Visa and MasterCard draws on the Wal-Mart I court's recitation of similar allegations made against Visa and MasterCard in its order granting the Wal-Mart plaintiffs' motion for class certification. See generally In re Visa Check/Mastermoney Antitrust Litig., 192 F.R.D. 68, 71-74 (E.D.N.Y.2000), aff'd, 280 F.3d 124 (2d Cir.2001). . For those interested in the workings of commerce, this is how a typical sales transaction works, as described in the opinion of the district court. See Reyn’s Pasta Bella, LLC v. Visa USA, Inc. 259 F.Supp.2d 992 , 996 n. 1 (N.D.Cal.2003). A consumer buys goods for $100 with a Visa or MasterCard provided by the issuing bank. The selling merchant takes the consumer's signed credit authorization and forwards it (usually electronically, to be followed by a paper trail) to the merchant’s bank (the acquiring bank). The acquiring bank pays the merchant $98.40 in exchange for title to the goods sold; the 1.6% discount is the “merchant discount.” The acquiring bank sells the title to the goods to the consumer’s issuing bank for $98.75. The issuing bank charges the consumer $100 and transfers title to the goods to the consumer. The $1.25 difference is the “interchange rate.” Thus, the consumer pays $100; the merchant gets $98.40; the consumer’s (“issuing”) bank gets $1.25 and the merchant's ("acquiring”) bank gets $0.35. The difference between what the two banks keep represents the difference between the credit risk the issuing bank runs with the consumer (greater) and the credit risk the acquiring bank runs with the issuing bank (lesser). . As we explain below, the fact that Plaintiffs’ class includes all merchants who currently have contracts with Visa and MasterCard does not broaden the temporal scope of Plaintiffs' claims to include a period after the period covered by the Wal-Mart class action. . Visa and MasterCard entered into parallel settlement agreements with identical terms. For convenience, we refer to the agreements simply as “the settlement.’’ . To determine what issues were actually litigated in the Wal-Mart courts, we take judicial notice of Plaintiffs’ briefs in those courts and tire transcript of the Wal-Mart fairness hearing. See Holder v. Holder, 305 F.3d 854, 866 (9th Cir.2002). Those briefs reveal that Plaintiffs litigated at the Wal-Mart fairness hearing virtually all of the issues they raise here. They litigated whether the Wal-Mart settlement released their price-fixing claims, whether the Banks could be released when they were not named as defendants in the Wal-Mart action or listed in the opt-out notice, whether the Wal-Mart settlement was fair and adequately represented Plaintiffs' claims, and whether Defendants should be judicially estopped from treating Plaintiffs' claims as factually related to the claims asserted in Wal-Mart. Defendants have requested that we take judicial notice of several other pleadings, memoranda, expert reports, etc., from the Wal-Mart litigation. We may take judicial notice of court filings and other matters of public record. See Burbank-Glendale-Pasadena Airport Auth. v. City of Burbank, 136 F.3d 1360 , 1364 (9th Cir.1998). Here, Defendants’ request is limited to documents filed in the Wal-Mart litigation. While some of these documents are filed under seal, they nonetheless are readily verifiable and, therefore, the proper subject of judicial notice. Accordingly, Defendants' request for judicial notice is granted. Plaintiffs have also requested that we take judicial notice of documents filed in the Wal-Mart litigation. For the reasons just stated, Plaintiffs' request for judicial notice is also granted. . Of course, we express no opinion on the validity or timeliness of any such complaint, it not being before us.