SUPPLEMENTAL ORDER ON CLASS CERTIFICATION OF STATE DAMAGE CLASSES
This case involves an alleged antitrust conspiracy to elevate or maintain U.S. car prices by preventing lower-priced Canadian cars from entering the American market. Remaining damage claims are based upon various state antitrust and consumer protection statutes. On May 12, 2006, I entered a *79preliminary order that approved certification of separate Rule 23(b)(3) damage classes of retail purchasers in each of five “exemplar” states. Order on Mot. for Class Cert.: Exemplar State Damage Classes (“May 12 Order”) (Docket Item 361). Although the defendants had not challenged the plaintiffs’ proposed ending date (“the present”) for the class, I became concerned about the typicality of certain named plaintiffs’ claims. I reserved judgment on the ending date for membership in the five classes and permitted further discovery and briefing. After oral argument on February 21, 2007, I now conclude that the class period should end April 30, 2003. Cross-border arbitrage opportunities may have waxed and waned before that date, but their scope is a proper subject for antitrust impact and damage analysis when the record is complete. I also address the remaining proposed statewide damage classes, and direct the preparation of a certification order. Once it is entered, it will be final for appeal purposes under Fed.R.Civ.P. 23(f).
Ending Date
In my May 12 Order, I did not finally certify the five exemplar classes because under the typicality analysis I was uncertain that the named plaintiffs’ claims were “typical of the claims ... of the class.” Fed. R. Civ.P. 23(a)(3). The Supreme Court has said that if, at the time the class is certified it is clear that the named plaintiffs suffered no injury, they cannot represent the class. Gen. Tel. Co. v. Falcon, 457 U.S. 147, 156, 102 S. Ct. 2364, 72 L.Ed.2d 740 (1982) (discussing East Tex. Motor Freight Sys., Inc., v. Rodriguez, 431 U.S. 395, 403, 97 S.Ct. 1891, 52 L.Ed.2d 453 (1977)).1 Here, comments by the plaintiffs’ lawyers led me to conclude that at least one named plaintiff in Kansas had purchased his vehicle at a time when exchange rates made Canadian car prices higher than American cars, contrary to the overall theory of the plaintiffs’ case. From the exchange, I thought that my concern involved a narrow question of determining actual prices and exchange rates.2 As a result, I said in my May 12 Order:
One final issue that comes up under typicality ... raises concern about the ending date for the proposed classes: that particular named plaintiffs’ claims (or the defenses to those claims) may not be typical of those of the class. As I have already noted, the plaintiffs virtually concede that their Kansas plaintiff bought a ear at a time, 2005, when the exchange rates were such that Canadian cars were priced higher than American cars; since there was no arbitrage opportunity, the conspiracy could not have increased American prices. This concession calls into question the chronological scope of the damage class: when should the class end? The plaintiffs’ reply memorandum suggests that this is a discovery problem; that some defendants used data in their response to the plaintiffs’ certification motion that the plaintiffs had not seen previously; that the plaintiffs need to see comparable data for all the defendants; and that therefore I should not deny certification based on a merely “speculative conflict.” Essentially, the plaintiffs ask me to certify the class now at its broadest and worry later about its proper scope and whether the named plaintiffs’ claims are typical.
I do not believe that is the proper way to proceed. Instead, as to certification of the individual state damage classes, I defer decision until the pertinent discovery problems are resolved and I request Magistrate Judge Kravchuk to hold a prompt conference and set appropriate deadlines. Then I will determine the class definition (and whether the named plaintiffs are representative).
May 12 Order at 25-26 (footnotes omitted).
In retrospect, I believe that I should have confined my expression of concern to the *80appropriateness of the particular named Kansas plaintiff, rather than raise a question about the class ending date; after all, the antitrust conspiracy to restrict supply is allegedly ongoing. Instead, I have provoked a debate over when the arbitrage window of opportunity closed, or whether it was ever open, or how far open it needed to be, a far broader controversy than I expected and one that would require a complete determination of the plaintiffs’ causation and damage case to resolve.3
Specifically, in response to my May 12 Order, the plaintiffs engaged their economic expert, Dr. Robert E. Hall of Stanford University and the Hoover Institution, to perform data analysis. Dr. Hall assessed the profitability of purchasing new cars and light trucks in Canada and re-selling them in the United States. Expert Rpt. of Prof. Robert E. Hall on the Timing of Profitability of Exporting New Vehicles from Canada to the U.S. (“Hall Arbitrage Rpt.”) (Docket Item 425). He examined various data and documents produced by the defendants, as well as some publicly available data and documents, id. If 3, and information he obtained from importers, id. H 35 n. 32. Dr. Hall concluded that for the time period in question, the percentage of Canadian vehicles (weighted by sales) that had price gaps larger than export costs (the arbitrage opportunity that the conspiracy allegedly sought to preempt) declined to less than 10% after April 30, 2003. Hall Arbitrage Rpt. 1146. As a result, the plaintiffs proposed that the class ending date be moved back from their original proposal (“the present”) to April 30, 2003. Pis.’ Mot. & Mem. of L. for Class Cert, of the Non-Exemplar States (“Pis.’ Mot.”) at 47 (Docket Item 418). The defendants, in turn, presented the analysis of their expert, Dr. Joseph P. Kalt of Harvard University’s John F. Kennedy School of Government. Expert Rpt. of Joseph P. Kalt (“Kalt Rpt.”) (Docket Item 461, Ex. 3 part 1). Dr. Kalt found fault with Dr. Hall’s computations on a variety of grounds (e.g., inadequate data and improper interpretation of data; improperly treating imported Canadian ears as “new”; failing to consider vertical unilateral restraints; choosing ten percent as the cutoff measure). Kalt Rpt. at 4-5. In response, the plaintiffs defended Dr. Hall’s data and analysis and pointed out that without his ten percent calculation, the class period would end January, 2004 4 Pis.’ Reply Mem. of L. Concerning Class Cert. (“Pis.’ Reply Mem.”) at 6 (Docket Item 475); See also Hr’g Tr., Feb. 21, 2007, pp. 15-16. They advanced that date as an alternate closing point for the class. Id.
The defendants’ primary unhappiness with Dr. Hall’s analysis flows from their continuing insistence that I determine now whether the alleged horizontal conspiracy actually impacted American car prices. (They insist that it did not.) In my May 12 Order, I explained in detail why individual statewide damage classes are certifiable based upon various states’ substantive law and why I would not make a final determination of the existence of antitrust impact at the certification stage. I see no need to reexamine that *81issue.5 The only question I address now is narrow: the proper ending point for the various statewide damage classes. In response to my expression of concern, I was expecting only uncontroversial evidence of exchange rates and actual prices so as to exclude a time period when Canadian car prices were higher than American. I was not seeking a precise calculation of the actual arbitrage opportunity from month to month and model to model or a decision now of how many available imports (or the threat of them) it would take to make American prices move (the 10% controversy). Realistically, that will be possible only after all pricing and damage discovery and expert analysis are complete.6 As I have said, I probably should have left the proposed ending date of the class untouched by my concern over the typicality of the named plaintiffs. But now the plaintiffs have admitted that they cannot prove damages to a class after April 30, 2003. I therefore end the class period at that date. I do not resolve the experts’ conflict over the adequacy of the pricing data (the defendants did not provide full discovery in time for Dr. Hall’s calculations, as he repeatedly points out, although the plaintiffs’ lawyers seem to say that what he had was sufficient), how it is interpreted (issues such as proper interpretation of data entry fields in the Powers Information Network forms, see footnote 8 infra), the volume of threatened imports required to provoke movement in American car prices, etc. An ongoing illegal conspiracy to restrict supply justifies an open ending date for the class at this stage, narrowed only by the plaintiffs’ admission. The alternative would be a complete assessment of antitrust causation and damages now, requiring completion of fact and expert discovery. This would generate what PolyMedica warned against, an “unwieldy trial on the merits” of causation at the class certification stage.7 In re Po*82lyMedica Corp. Sec. Litig., 432 F.3d 1, 17 (1st Cir.2005). If, when we reach the stage of determining causation and damages, a class ending date of April 30, 2003, turns out to be too broad (or too narrow), the ending date can then be altered or amended. See Fed.R.Civ.P. 23(c)(1)(C); May 12 Order at 23 (“the defendants may be able to prove that the arbitrage opportunities in certain years were so limited that there would be no antitrust impact from a horizontal company”). My May 12 concern (over whether certain named plaintiffs could represent the class if they had purchased during a time when the arbitrage opportunity reversed) has been satisfied by substituting plaintiffs who purchased at a different time.
I reiterate: for certification of the class, I do not finally determine when pricing impact appeared, disappeared or reappeared in response to varying arbitrage opportunities. Once the record is complete, that variation may provoke the creation of future subclasses, alteration of the scope of class certification, or judgment for the defendants in whole or in part. Indeed, the close of discovery and summary judgment practice will soon be upon us. The defendants can then advance their assertions based upon a complete record.8
Additional Damage Class Certifications
The plaintiffs ask me now to certify damage classes for one more exemplar state, Kansas (I earlier declined to do so because their Kansas plaintiff purchased at a time when the arbitrage opportunity seemed to flow the other direction; now they have a plaintiff who purchased when the arbitrage opportunity was more demonstrable), and for the remaining seventeen states where they have state antitrust and/or consumer protection claims. Initially, I was reluctant, preferring to await any appellate guidance that the defendants might obtain if they persuade the First Circuit to accept their interlocutory appeal. But under Rule 23(f) as amended, each class certification is subject to discretionary interlocutory appeal, so it is preferable to make the certification decisions now. I see no reason to repeat my May 12 exercise for each of Kansas and the other 17 states. The briefing on both sides has been excellent, but neither side has presented anything to show that the substantive laws of any of these additional states will fall outside the range of analysis that I performed in my May 12 Order. I conclude that the May 12 analysis, finding statewide damage classes appropriate under Rule 23(b)(3) for the substantive law of each of the five states then at issue, would produce the same conclusion for *83a separate statewide damage class here for each of the remaining 18 states.
There is one new issue. The defendants argue that four of the additional states (Georgia, Mississippi, Montana, Utah) prohibit class actions as a matter of state law and, as a result, that I may not certify a statewide damage class for any of those four states.
I start with Mississippi, where the plaintiffs make a state law antitrust claim. Mississippi does not provide for class actions in its state courts at all. That is Mississippi’s choice to make as a matter of state procedure for its state courts, but not for the federal courts. The defendants have drawn to my attention no attempt by Mississippi to limit the plaintiffs’ substantive rights under Mississippi’s antitrust law (unlike consumer protection where Mississippi does have a statutory prohibition of class actions. Miss. Code Ann. § 75-24-15(4)). As I stated in my May 12 Order, Federal Rule of Civil Procedure 23 sets the procedural criteria for when class actions are permitted in federal court and a federal judge must follow that Rule. I conclude that a class is properly certifiable under Federal Rule 23 to enforce Mississippi antitrust law. See Hanna v. Plumer, 380 U.S. 460, 85 S.Ct. 1136, 14 L.Ed.2d 8 (1965); 7A Charles Alan Wright, Arthur R. Miller & Mary Kay Kane, Federal Practice and Procedure: Civil 3d, § 1758 at 118 (3d ed. 2005) (“The Hanna decision resolves any doubt as to the availability of a class action in a federal court under Rule 23 in a diversity action, even in a state that does not recognize the procedure.”); Erwin Chemerinsky, Federal Jurisdiction, § 5.3 at 317 (Aspen Law & Business 4th ed. 2003) (“[I]t is now clearly established that the Federal Rules of Civil Procedure ... áre to be applied by the federal court, even if there is a conflicting state requirement and even if the application of the federal Rule might determine the outcome of the case.”); Linda S. Mullenix, Should Mississippi Adopt a Class-Action Rule—Balancing the Equities: Ten Considerations that Mississippi Rulemakers Ought to take into Account in Evaluating Whether to Adopt a State Class-Action Rule, 24 Miss. C.L.Rev. 217, 218-19 & nn. 8-9 (2005) (citing several cases involving class action practice under Federal Rule 23 in federal courts based on Mississippi state law claims).
Georgia, Montana and Utah are different. In each of those states, the plaintiffs’ claim arises under the consumer protection statute. In creating a consumer substantive right to relief, each respective statute defines the damages a consumer can recover by simultaneously eliminating or severely limiting the consumer’s ability to use a class action in the process. Georgia provides that under its consumer protection statute, an injured consumer “may bring an action individually, but not in a representative capacity.” Ga.Code Ann. § 10-1-399. In Montana, a consumer can sue for actual damages, or $500 if greater, and attorney fees, but only as “an individual but not a class action.” Mont.Code Ann. § 30-14-133. Utah allows actual damages, or $2,000 if greater, “but not in a class action” (unless the transaction violated a specific administrative rule or court decision, and then a class action is available). Utah Code Ann. § 13-11-19. I conclude that these three states have gone beyond merely procedural rules and have defined the substantive recovery available to an injured consumer ifi.g., an individual fixed-damage recovery floor, but no class recovery) or defined the capacity to sue (no representative capacity). The First Circuit reads Hanna “as stating a principle for resolving a direct conflict between two strictly procedural rules,” Marshall v. Mulrenin, 508 F.2d 39, 44 (1st Cir. 1974); accord Gil de Rebollo v. The Miami Heat Assoc., Inc., 137 F.3d 56 (1st Cir.1998). It rejects the proposition “that Hanna commands that the Federal Rules be woodenly applied irrespective of a discoverable substantive, as distinguished from a merely procedural, state purpose.” Marshall, 508 F.2d at 44. The Seventh Circuit is even more explicit:
The second class of pretty easy cases is where the state procedural rule, though undeniably “procedural” in the ordinary sense of the term, is limited to a particular substantive area, such as contract law, or tort law. For then the state’s intention to influence substantive outcomes is manifest *84and would be defeated by allowing parties to shift their litigation into federal court unless the state’s rule was applied there as well.
S.A Healy Co. v. Milwaukee Metro. Sewerage Disk, 60 F.3d 305, 310 (7th Cir.1995) (citations omitted).9 For Georgia, Montana and Utah the consumer class limitation is substantive.10 When the issue is one of state substance and federal procedure, the state substantive rule controls. Therefore, I conclude that a statewide damage class is not certifiable for Georgia, Montana and Utah, but is certifiable for each of 15 additional states.11
Trial Manageability
My May 12 Order assumed a separate trial for each statewide damage class. I then learned that both sides had been proceeding on the understanding that there would be a single trial of all remaining states. I directed the plaintiffs to propose a trial management plan for such an approach. See Procedural Order of June 16, 2006 (Docket Item 376). They have done so, and the defendants have criticized it. I choose not to resolve their disagreements over consolidated trial management at this time. My class certification is state-by-state, not some national, regional, or other grouping of states. Any manageability issues under the class action rules, therefore, should be judged on the basis of each single statewide class, and I conclude (as I did in my May 12 Order) that each statewide antitrust or consumer protection class action is separately manageable. When we are closer to trial, and I can determine how many states remain in play, that will be a better time to assess whether it is best to proceed to trial state-by-state, as I had originally assumed, or allow some kind of consolidation under Fed.R.Civ.P. 42.
Conclusion
I am prepared now to enter my final order certifying a statewide damage class separately for each of the 20 states. That order is based upon the state substantive law of each of those states and federal procedural (class action) law. By April 11, 2007, the plaintiffs shall file a proposed order that meets all the requirement of Rule 23(c)(1)(B) (defining the class, the claims, issues, defenses and reappointing class counsel). The defendants shall respond within fourteen days thereafter, but need not renew the objections they have raised already. I defer notice issues (discretionary for the 23(b)(2) injunctive class; mandatory for the 20 separate 23(b)(3) damages classes; mandatory for the proposed settlement classes for defendants Toyota and CADA12; and mandatory for the proposed dismissal of NADA) until I understand what the First Circuit intends to do and can hear further about notice from counsel.
So Ordered.