# Operator Stack Fund: portfolio, investments and team > Operator Stack Fund is a vc firm based in United States. 1 investment on record, latest Sept 2025. Portfolio, stages, co-investors and team. Source: https://millionrounds.com/fund/operator-stack-fund (Millionrounds; every figure on the page links to its filing or article) United States · [Investor](https://millionrounds.com/investors) # Operator Stack Fund Filed with the SEC to raise a fund in Sep 2026, closing $1M. Last cheque observed Sep 2025. Quiet New fund $750K, Sept 2026 VC firm Seed Venture Capital & Private Equity Cheques on record **0%** of best year **0** **cheques in 12 months**, 1 on record Since the last cheque **409** days **00** hrs **00** min **00** sec Median round **$5.9M** Rounds led **0 of 1** Pitch Operator Stack Fund ## Operator Stack Fund highlights - 01 1 rounds on record - 02 Mostly Seed: 100% of its rounds ## What they do - **Type:** VC firm (from a list, unverified) - **Cheque size:** Not stated - **Sectors:** Venture Capital & Private Equity - **Based in:** San Francisco, United States - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **1 appearances** - **2025** 1 round - **Sept** **[Parento](https://millionrounds.com/company/parento)** Seed · US · AlleyWatch **$5.9M** With 13 others An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The team Named by the firm itself, on a filing, its Form ADV or its company registration **3 named** DK **Daniel Kennedy** Executive Officer i Filing they signed MD **Matthew Doka** Executive Officer i Filing they signed NS **Natarajan Subbiah** Executive Officer i Filing they signed We also hold **3** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them. New fund on file **$750K** raised in Sept 2026 From its SEC filing, not a journalist: a firm that has just raised has money to deploy. ## The cheque Seed Median round joined **$5.9M** the round, not its cheque Led 0 of 1 rounds **0%** - **Sole investor:** Never alone - **Last cheque:** Sept 2025 Rounds by stage said on their site - Seed *1* Cheques by month Led Joined Nov 2023 Oct 2026 **Pitching Operator Stack Fund?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Recently backed The latest companies Operator Stack Fund put money into. [**Parento** $5.9M · Sept 2025](https://millionrounds.com/company/parento) ## Quick answers about Operator Stack Fund ### What does Operator Stack Fund invest in? Operator Stack Fund invests most often at Seed (100% of the rounds on record), in sectors such as Venture Capital & Private Equity. ### How active is Operator Stack Fund? 1 investments on record, 0 of them in the last 12 months. The most recent was in Sept 2025. ### What has Operator Stack Fund invested in recently? Its most recent investments on record: Parento (Seed, Sept 2025). ### How big are Operator Stack Fund's cheques? The median round it joins is $5.9M. ### Is Operator Stack Fund investing now? No investments in the last 12 months; the latest was in Sept 2025. ### What kind of investor is Operator Stack Fund? Operator Stack Fund is a VC firm based in San Francisco, United States. ### Has Operator Stack Fund raised a new fund? Its latest fund filing with the SEC was in Sept 2026, reporting $750K raised. ### Where does this information on Operator Stack Fund come from? From 1 articles and filings naming it in a round, public registers and its own website, checked and rebuilt every night. ## Raising now? Find the investors who back rounds like yours, and keep every conversation on one fundraising board. Find similar investorsOpen your CRM Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=operator-stack-fund) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=operator-stack-fund)