The Cosmos Card Show runs two days at the Milpitas Community Center Auditorium over Labor Day weekend, Saturday and Sunday, September 5 and 6, 2026. Milpitas sits at the hinge point of the Bay Area — where Interstates 880 and 680 meet at the top of the South Bay — which makes it one of the easiest show locations to reach from San Jose, Fremont, Santa Clara, Sunnyvale, Hayward, and the entire East Bay corridor. A holiday-weekend two-day show at that crossroads reliably draws a strong regional crowd.
The vendor floor covers the full hobby. Sports dealers stock MLB through the pennant-race stretch, NFL in its opening weeks, NBA ahead of training camp, plus NHL, UFC, boxing, and soccer. Inventory spans 1950s and 1960s Topps and Bowman vintage, 1970s and 1980s runs that set builders still need, dollar and quarter boxes of junk-wax commons, and current-year Panini Prizm, Donruss Optic, Select, Mosaic, Contenders, Topps Chrome, Bowman Draft, and Stadium Club rookies and parallels. Local team demand centres on the San Francisco Giants, Oakland Athletics, San Francisco 49ers, Golden State Warriors, and San Jose Sharks, with strong secondary interest in the Sacramento Kings and Las Vegas Raiders. Trading card game vendors carry Pokémon in raw singles, graded slabs, and sealed product from vintage WOTC sets through the newest Scarlet and Violet expansions, plus Japanese imports, and cover Magic: The Gathering, Yu-Gi-Oh!, One Piece, Disney Lorcana, Dragon Ball Super, and Digimon. Locked cases hold PSA, BGS, SGC, and CGC graded material, and additional tables offer autographed memorabilia, comics, Funko Pops, retro video games, and hobby supplies.
Hours run 10:00 AM to 5:00 PM Pacific on Saturday and 10:00 AM to 4:00 PM Pacific on Sunday. Admission is a modest walk-up door charge typical of a community-center show, with children accompanied by an adult generally admitted free. Advance ticketing is not usually published for this event; confirm current pricing with the promoter before travelling.
The Milpitas Community Center Auditorium is at 457 East Calaveras Boulevard, minutes from the I-880 and I-680 junction and a short drive from the Milpitas BART and VTA transit center. Free on-site parking is available in the community center lot — no garage fees, no meters. The auditorium is indoors, climate-controlled, well lit for inspecting raw cards, and fully ADA-accessible. Milpitas offers an unusually deep and diverse restaurant scene within a few minutes' drive, from Vietnamese and Filipino to Indian and Taiwanese, which makes a lunch break part of the appeal.
This show works for South Bay and East Bay collectors who want a two-day event without Peninsula traffic, families making a holiday-weekend outing, set builders, vintage diggers, TCG players restocking singles for fall tournaments, and dealers buying raw collections.
For the best experience, arrive at Saturday opening when inventory is freshest and dealers are most willing to deal. Bring cash in small bills for box digging, a want list sorted by sport and set, penny sleeves and top loaders, and a carrying box. Come back Sunday afternoon if you are hunting bargains — the last two hours of a two-day show are when prices soften. If you are selling, bring your cards sorted rather than loose.