# Diameter Capital Partners Lp: portfolio, investments and team > Diameter Capital Partners Lp is a private equity based in United States. 2 investments on record, 1 in the last 12 months, latest Oct 2026. Source: https://millionrounds.com/fund/diameter-capital-p (Millionrounds; every figure on the page links to its filing or article) United States · [Investor](https://millionrounds.com/investors) # Diameter Capital Partners Lp Last cheque observed Oct 2026; 2 cheques on record. Deploying now Private equity Series A Series B Asset Management Consulting Credit Deploying now **100%** of best year **1** **cheques in 12 months**, 2 on record Since the last cheque **19** days **00** hrs **00** min **00** sec Median round **$13B** Rounds led **0 of 2** Pitch Diameter Capital Partners Lp ## Diameter Capital Partners Lp highlights - 01 1 cheques in the last 12 months - 02 Mostly Debt and Series E: 100% of its rounds ## What they do - **Type:** Private equity (from a list, unverified) - **Cheque size:** Not stated - **Stages:** Series A Series B - **Sectors:** Asset Management Consulting Credit - **Based in:** NEW YORK, United States - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **2 appearances** - **2026** 1 round - **Oct** **[Waymo](https://millionrounds.com/company/waymo)** Debt · US · Firms' own news pages **$5.0B** With 12 others - **2025** 1 round - **Oct** **[xAI](https://millionrounds.com/company/xai)** Series E · US · TechStartups **$20B** With 11 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 **7 named** BD **Benjamin David Pasternack** Co-Head & Partner i Form ADV JL **Jonathan Lewinsohn** Co-Chief Executive Officer & Co-President i Form ADV JA **Joseph Alexander Carvalho** Co-Head & Partner i Form ADV MG **Matthew Gerard Gilmartin** Chief Operating Officer, Chief Financial Officer & Head of Operations i Form ADV MJ **Michael Joshua Cohn** General Counsel and Chief Compliance Officer i Form ADV SK **Scott Kreitler Goodwin** Co-Chief Executive Officer & Co-President i Form ADV VH **Vishal Harshad Sheth** Chief Financial Officer i Form ADV We also hold **6** 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. ## What the register says From the firm's own filings with the SEC, which it must file accurately by law **$33B** assets it manages, 3 advisers combined Oct 2026 **Registered** investment adviser full reporting to the SEC - **Legal name:** Diameter Capital Partners LP - **SEC number:** CRD 335395 Funds on its Form ADV **20** private funds, **$19B** in gross assets · filed Oct 2024 Securitised assets **12** Hedge **6** Private equity **2** - Diameter Master Fund L.P. *Hedge* 419 investors $10B - Diameter Dislocation Master Fund II L.P. *Hedge* 331 investors $2.5B - Diameter Dislocation Master Fund L.P. *Hedge* 203 investors $946M - Diameter Capital CLO 7 LTD *Securitised assets* 4 investors $555M - Diameter Capital CLO 4 LTD *Securitised assets* 4 investors $507M - Diameter Capital CLO 6 LTD *Securitised assets* 4 investors $498M - DLF I LLC *Private equity* 1 investor $492M - Diameter Capital CLO 1 LTD *Securitised assets* 6 investors $452M - Diameter Capital CLO 2 LTD *Securitised assets* 4 investors $452M - Diameter Capital CLO 8 LTD *Securitised assets* 2 investors $452M And 10 more on the filing. ## The cheque Series A Series B Median round joined **$13B** the round, not its cheque Led 0 of 2 rounds **0%** - **Sole investor:** Never alone - **Last cheque:** Oct 2026 Rounds by stage said on their site - Debt *1* - Series E *1* - Series A said *-* - Series B said *-* Cheques by month Led Joined Nov 2023 Oct 2026 Often in the room with - [Fidelity](https://millionrounds.com/fund/fidelity) 2 **Pitching Diameter Capital Partners Lp?** 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 *→* ## Who they invest alongside The investors most often in the same rounds as Diameter Capital Partners Lp. A count of rooms they were both in, not a relationship either has claimed. [**Fidelity** VC firm **2** rounds together](https://millionrounds.com/fund/fidelity) ## Recently backed The latest companies Diameter Capital Partners Lp put money into. [**Waymo** $5.0B · Oct 2026](https://millionrounds.com/company/waymo)[**xAI** $20B · Oct 2025](https://millionrounds.com/company/xai) ## Quick answers about Diameter Capital Partners Lp ### What does Diameter Capital Partners Lp invest in? Diameter Capital Partners Lp invests most often at Debt and Series E (100% of the rounds on record), in sectors such as Asset Management, Consulting and Credit. ### How active is Diameter Capital Partners Lp? 2 investments on record, 1 of them in the last 12 months. The most recent was in Oct 2026. ### What has Diameter Capital Partners Lp invested in recently? Its most recent investments on record: Waymo (Debt, Oct 2026) and xAI (Series E, Oct 2025). ### How big are Diameter Capital Partners Lp's cheques? The median round it joins is $13B. ### Is Diameter Capital Partners Lp investing now? Yes: it is actively investing, with 1 investments in the last 12 months. ### Who does Diameter Capital Partners Lp invest alongside? Most often Fidelity (2 rounds together). ### What kind of investor is Diameter Capital Partners Lp? Diameter Capital Partners Lp is a private equity firm based in NEW YORK, United States. ### How much does Diameter Capital Partners Lp manage? About $33B, as regulatory assets under management, 3 advisers added together (Oct 2026). ## 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=diameter-capital-p) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=diameter-capital-p)