About
Co-founder of tash, a brokerage-style investment platform for trading graded trading cards held in registered vehicles with vaulted custody. He previously worked at UBS Global Markets and Seso, and studied Economics and Data Science at UC Berkeley.
Founder at tashYC S26
Intro paths
YC
Nathan went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran tash's batch and knows the company first-hand. YC profile ↗
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In turn, Nathan can intro founders to tash's investors below.
tash's investors · 1
Co-founders at tash
Experience
- tashCo-Foundercurrent2026 — presentSan Francisco, CA
- Barclays Investment BankIncoming Investment Banking Summer Analyst2025 — 2026New York, NY
- UBSGlobal Markets Summer Analyst2025New York, New York, United States
Frequently asked questions
- Who is Nathan Borshell?
- Co-founder of tash, a brokerage-style investment platform for trading graded trading cards held in registered vehicles with vaulted custody. He previously worked at UBS Global Markets and Seso, and studied Economics and Data Science at UC Berkeley.
- Where does Nathan Borshell work?
- Nathan Borshell is Founder of tash.
- What companies did Nathan Borshell found?
- Nathan Borshell founded tash.
- Where did Nathan Borshell go to school?
- Nathan Borshell studied at Y Combinator; University of California, Berkeley; UC Berkeley College of Computing, Data Science, and Society.
Founder mafias
Y Combinator mafia9,496
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Hotspots
+ 9,489 more
Y Combinator mafia5,145
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyGleb ChuvpiloAlumFounded Pager +4IanFounded Apex Technology +3
+ 5,138 more
University of California, Berkeley mafia789
Also came through, then founded or led a company.
Steve WozniakBSFounded AppleTony XuB.S.Founded DoorDashAravind SrinivasDoctor of Philosophy - PhDFounded PerplexityAli GhodsiPost-docFounded DatabricksRyan PetersenBAFounded FlexportAbraham BachrachBachelor of Science (BS)Founded Skydio
+ 782 more
Barclays mafia79
Also came through, then founded or led a company.
Max AhrensSummer AnalystFounded Maihem +2Diego OppenheimerAssociateFounded Guardrails AI +1John ZucchiSummer Legal AnalystFounded Agave +1Chang SheVice PresidentFounded Datapad +1Haroon HassanAssociate Director, Credit TradingFounded Sense Street +1Ben CeraAssociate Vice PresidentFounded Gift Shop +1
+ 72 more
UBS mafia57
Also came through, then founded or led a company.
Nessan BerminghamEquity Research AnalystFounded Korro Bio +2David SchilanskyM&A associateFounded One Biosciences +2Vlad IlyushchenkoCash Equities Order Management DeveloperFounded QuestDB +1Shiliang TangElectronic Volatility Trading (Proprietary Trading Group)Founded Monarq +1Darwish GaniInvestment Banking Summer AnalystFounded Openborder +1Rosi BodnarSenior Executive AssistantFounded Evozyne
+ 50 more
Same school
Also attended Y Combinator2,000
Ryan SheaCo-founder of Blockstack (Stacks)Suhail DoshiFounder of Mixpanel; founder of ParticleArhaan A.Deeptech Fellow at Clear VenturesAkshat GoenkaInvestor at Moonfire VenturesJon XuGeneral Partner at Y CombinatorChris GoldaGeneral Partner at Y Combinator
+ 1,994 more
Also attended University of California, Berkeley1,790
Byron DeeterPartner at Bessemer Venture PartnersSteve WozniakCo-founder of AppleTony XuCo-founder & CEO of DoorDashAravind SrinivasCo-founder & CEO of Perplexity AIAli GhodsiCo-founder & CEO of DatabricksRyan PetersenFounder & CEO of Flexport
+ 1,784 more
Also attended UC Berkeley College of Computing, Data Science, and Society8
Arhaan A.Deeptech Fellow at Clear VenturesArvind VivekanandanScout at LvlUp VenturesArnav JainFounder at RovrAdam AlSayyadFounder at CascadeKyle ChangFounder at CentralComsVictor ShammasFounder at tash
+ 2 more
Also attended Loyola High School of Los Angeles23
Brian Bustamante-NicholsonPartner at GreycroftOmar Njie, MDPrincipal at AlleyCorpAndy PerilleVice President at Archer Capital GroupRyan RoddyInvestor at Seaside VenturesMatt BrownPartner at Matrix PartnersLucas MannManaging Partner at Acre Venture Partners
+ 17 more
Shared employers
Also worked at tash3
Also worked at Barclays Investment Bank380
David Clark GuillermoInvestments at Impact America FundThomas RubensInvestor at DN CapitalKerry WongHead of Investor Relations at Pantera CapitalJohn McCulloughInvestor at OpenView Venture PartnersVinnie McSweeneyInvestor at OpenView Venture PartnersDavid ParraData Quality & Project Engineering Manager at Inveready Technology Investment Group
+ 374 more
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