Potrero Capital Research LLC — 13F Holdings & Portfolio
CIK 1536630 · latest 13F-HR filed 2026-11-13
Potrero Capital Research LLC manages $98.3M in 13F-reported U.S. long-equity assets across 35 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are GMTL (6.67%), MKSI (6.61%), VEEV (6.58%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 14 new positions and exited 23; 4 existing positions rose in reported value and 16 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-11-13
vs 2026-06-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q3 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q2 26 → Q3 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
5 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 53.7%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 27, 2026.
SUITE 1010
SAN FRANCISCO, CA 94104
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| RIPSTEEN, JACK, R Control | MANAGING MEMBER since Feb 2003 | 75% or more | Individual |
| NURTMAN, HOWARD, IAN | CCO since Jun 2017 | Less than 5% | Individual |
Ownership & leadership changes · 4 filings with changes since Mar 26, 2014
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- ChangedNURTMAN, HOWARD, IAN · no longer a control person
- AddedNURTMAN, HOWARD, IAN · CCO · Less than 5% · control person
- ChangedRIPSTEEN, JACK, R · title MANAGING MEMBER / CCO → MANAGING MEMBER
- No longer listedARAGON, CYNTHIA, MARIE · CCO · Less than 5% · control person · listed since Feb 2016
- ChangedRIPSTEEN, JACK, R · title MANAGING MEMBER → MANAGING MEMBER / CCO
- AddedARAGON, CYNTHIA, MARIE · CCO · Less than 5% · control person
- ListedRIPSTEEN, JACK, R · MANAGING MEMBER · 75% or more · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- INTEL CORP$2.2M +195.6%
- FRESHWORKS INC$1.4M +215.5%
- NEXTDOOR HOLDINGS INC$143.6K +7.0%
- META PLATFORMS INC$32.4K +28.7%
Top Trims
- GE VERNOVA INC-$6.4M -76.7%
- BLACKLINE INC-$5.4M -80.1%
- AMBARELLA INC-$5.3M -71.1%
- SEAGATE TECHNOLOGY HLDNGS PL-$4.9M -55.2%
- TRANSALTA CORP-$4.4M -73.0%
New Positions
- MKS INC.$6.5M
- VEEVA SYS INC$6.5M
- SERVICENOW INC$5.2M
- ZOOM COMMUNICATIONS INC$5.0M
- NEXTPOWER INC$4.7M
Exited Positions
- CHURCHILL CAP CORP XI$7.9M
- HIMS & HERS HEALTH INC$7.4M
- ADVANCED ENERGY INDS$6.9M
- AMRIZE LTD$6.2M
- ANTERIX INC$4.8M
Potrero Capital Research LLC Holdings (2026-09-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | GUARDIAN METAL RES PLC | GMTL | 401382106 | $6.6M | 6.67% | 735,274 | SH |
| 2 | MKS INC. | MKSI | 55306N104 | $6.5M | 6.61% | 24,500 | SH |
| 3 | VEEVA SYS INC | VEEV | 922475108 | $6.5M | 6.58% | 22,664 | SH |
| 4 | CORNING INC | GLW | 219350105 | $5.4M | 5.47% | 35,000 | SH |
| 5 | SERVICENOW INC | NOW | 81762P102 | $5.2M | 5.25% | 38,500 | SH |
| 6 | ZOOM COMMUNICATIONS INC | ZM | 98980L101 | $5.0M | 5.09% | 55,164 | SH |
| 7 | BLACKROCK SCIENCE & TECHNOLO | BSTZ | 09260K101 | $4.9M | 5.00% | 167,198 | SH |
| 8 | NEXTPOWER INC | NXT | 65290E101 | $4.7M | 4.76% | 60,000 | SH |
| 9 | TOAST INC | TOST | 888787108 | $4.1M | 4.13% | 140,000 | SH |
| 10 | NOKIA CORP | NOK | 654902204 | $4.1M | 4.13% | 400,000 | SH |
| 11 | DYNATRACE INC | DT | 268150109 | $4.0M | 4.11% | 70,000 | SH |
| 12 | SEAGATE TECHNOLOGY HLDNGS PL | STX | G7997R103 | $3.9M | 4.01% | 4,272 | SH |
| 13 | GLOBALFOUNDRIES INC | GFS | G39387108 | $3.8M | 3.90% | 80,000 | SH |
| 14 | M-TRON INDS INC | MPTI | 55380K109 | $3.4M | 3.46% | 43,523 | SH |
| 15 | INTEL CORP | INTC | 458140100 | $3.4M | 3.45% | 28,220 | SH |
| 16 | NEXTDOOR HOLDINGS INC | NXDR | 65345M108 | $2.2M | 2.22% | 897,718 | SH |
| 17 | AMBARELLA INC | AMBA | G037AX101 | $2.1M | 2.19% | 30,916 | SH |
| 18 | FRESHWORKS INC | FRSH | 358054104 | $2.1M | 2.10% | 161,330 | SH |
| 19 | CCC INTELLIGENT SOLUTIONS HL | CCC | 12510Q100 | $2.0M | 2.01% | 297,336 | SH |
| 20 | MONDAY COM LTD | MNDY | M7S64H106 | $2.0M | 2.00% | 25,000 | SH |
| 21 | GE VERNOVA INC | GEV | 36828A101 | $1.9M | 1.97% | 2,039 | SH |
| 22 | DOCUSIGN INC | DOCU | 256163106 | $1.8M | 1.88% | 27,500 | SH |
| 23 | TALEN ENERGY CORP | TLN | 87422Q109 | $1.7M | 1.72% | 5,418 | SH |
| 24 | TRANSALTA CORP | TAC | 89346D107 | $1.6M | 1.67% | 135,553 | SH |
| 25 | PRENETICS GLOBAL LTD | PRE | G72245122 | $1.5M | 1.53% | 64,943 | SH |
| 26 | IVANHOE ELECTRIC INC | IE | 46578C108 | $1.5M | 1.52% | 151,073 | SH |
| 27 | ASANA INC | ASAN | 04342Y104 | $1.4M | 1.45% | 169,310 | SH |
| 28 | BLACKLINE INC | BL | 09239B109 | $1.3M | 1.36% | 50,245 | SH |
| 29 | CELSIUS HLDGS INC | CELH | 15118V207 | $1.2M | 1.25% | 45,000 | SH |
| 30 | STARZ ENTERTAINMENT CORP. | STRZ | 855919106 | $1.1M | 1.11% | 46,095 | SH |
| 31 | BILL HOLDINGS INC | BILL | 090043100 | $753.3K | 0.77% | 17,707 | SH |
| 32 | ZEVIA PBC | ZVIA | 98955K104 | $371.9K | 0.38% | 315,181 | SH |
| 33 | META PLATFORMS INC | META | 30303M102 | $145.0K | 0.15% | 200 | SH |
| 34 | BLUE MOON METALS INC | BMM | 09570Q509 | $59.4K | 0.06% | 11,824 | SH |
| 35 | NCINO INC | NCNO | 63947X101 | $50.3K | 0.05% | 2,774 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-09-30 | 2026-11-13 | $98.3M | 35 | 0001536630-26-000008 |
| 2026-06-30 | 2026-08-14 | $179.9M | 47 | 0001536630-26-000006 |
| 2026-03-31 | 2026-05-15 | $162.9M | 34 | 0001536630-26-000005 |
| 2025-12-31 | 2026-02-17 | $297.0M | 37 | 0001536630-26-000004 |
| 2025-09-30 | 2025-11-14 | $868.7M | 43 | 0001536630-25-000007 |
SUITE 1010
SAN FRANCISCO, CA 94104