13F portfolio / Investment manager
Whale Rock Capital
Alexander Sacerdote (CEO, managing member)
The firm is based in Boston, MA, according to its SEC filings.
Its earliest 13F holdings report on SEC EDGAR was filed in February 2007.
SEC Form ADV lists Alexander C. Sacerdote as CEO, owner and managing member.
The 13F shows long US-listed stock and option positions only. It leaves out short positions, cash, bonds and most non-US holdings.
- Reported 13F value
- $12.5B
- Positions
- 35
- Est. 1-yearEstimate
- +39.9%SPY +15.7%
- Est. 3-year, annualizedEstimate
- +53.8%SPY +22.8%
As of Jun 30, 2026 · filed Aug 14, 2026
Holdings
7 new · 8 added · 17 trimmed · 3 unchanged · 7 sold out
| 1 | SNDK on Yahoo Finance (opens in a new tab) | Sandisk CorpCOM | 10.9% | $1.4B | 596,545 | Trimmed -25.4% | $200.29 | $1328.47 | +563.3% |
| 2 | AMD on Yahoo Finance (opens in a new tab) | Advanced Micro Devices IncCOM | 7.0% | $877M | 1,509,650 | Added +2081.2% | $400.98 | $534.28 | +33.2% |
| 3 | GOOGL on Yahoo Finance (opens in a new tab) | Alphabet IncCAP STK CL A | 6.9% | $856M | 2,396,352 | Trimmed -10.3% | $257.76 | $341.57 | +32.5% |
| 4 | TTMI on Yahoo Finance (opens in a new tab) | TTM Technologies IncCOM | 6.4% | $791M | 4,230,575 | Added +20.4% | $66.79 | $95.01 | +42.3% |
| 5 | ALAB on Yahoo Finance (opens in a new tab) | Astera Labs IncCOM | 6.1% | $757M | 1,567,882 | New | $265.37 | $286.76 | +8.1% |
| 6 | AMZN on Yahoo Finance (opens in a new tab) | Amazon Com IncCOM | 4.7% | $583M | 2,447,732 | Added +34.5% | $198.26 | $249.20 | +25.7% |
| 7 | GLW on Yahoo Finance (opens in a new tab) | Corning IncCOM | 4.6% | $571M | 2,233,999 | Trimmed -2.8% | $51.96 | $133.52 | +157.0% |
| 8 | MKSI on Yahoo Finance (opens in a new tab) | Mks Inc.COM | 4.5% | $566M | 1,271,373 | Trimmed -2.7% | $225.63 | $218.50 | -3.2% |
| 9 | CLS on Yahoo Finance (opens in a new tab) | Celestica IncCOM | 4.3% | $539M | 1,476,430 | Trimmed -2.8% | $58.07 | $304.83 | +424.9% |
| 10 | BE on Yahoo Finance (opens in a new tab) | Bloom Energy CorpCOM CL A | 3.9% | $487M | 1,608,305 | Trimmed -2.8% | $57.57 | $225.08 | +291.0% |
| 11 | COHR on Yahoo Finance (opens in a new tab) | Coherent CorpCOM | 3.9% | $482M | 1,222,035 | Added +25.3% | $162.47 | $235.79 | +45.1% |
| 12 | FN on Yahoo Finance (opens in a new tab) | FabrinetSHS | 3.4% | $419M | 744,765 | Added +21.8% | $282.68* | $368.00 | +30.2% |
| 13 | SITM on Yahoo Finance (opens in a new tab) | Sitime CorpCOM | 3.4% | $418M | 560,701 | Trimmed -2.8% | $227.67 | $474.51 | +108.4% |
| 14 | FROG on Yahoo Finance (opens in a new tab) | Jfrog LtdORD SHS | 3.3% | $405M | 4,458,423 | Trimmed -25.9% | $48.25 | $84.61 | +75.4% |
| 15 | MTSI on Yahoo Finance (opens in a new tab) | Macom Tech Solutions Hldgs ICOM | 3.0% | $376M | 988,785 | Trimmed -15.8% | $180.22 | $263.35 | +46.1% |
| 16 | VIAV on Yahoo Finance (opens in a new tab) | Viavi Solutions IncCOM | 2.6% | $328M | 6,875,942 | Added +98.0% | $37.06 | $34.04 | -8.2% |
| 17 | LRCX on Yahoo Finance (opens in a new tab) | Lam Research CorpCOM NEW | 2.6% | $322M | 742,638 | Trimmed -22.5% | $223.01 | $266.99 | +19.7% |
| 18 | TSM on Yahoo Finance (opens in a new tab) | Taiwan Semiconductor ManufacSPONSORED ADS | 2.3% | $282M | 589,911 | Trimmed -28.0% | $220.91 | $413.04 | +87.0% |
| 19 | CVNA on Yahoo Finance (opens in a new tab) | Carvana CoCL A | 2.3% | $281M | 4,267,080 | Added +386.2% | $66.90 | $59.04 | -11.8% |
| 20 | META on Yahoo Finance (opens in a new tab) | Meta Platforms IncCL A | 2.1% | $257M | 455,982 | Trimmed -11.0% | $407.53* | $706.95 | +73.5% |
| 21 | WDC on Yahoo Finance (opens in a new tab) | Western Digital CorpCOM | 2.1% | $256M | 400,687 | Trimmed -2.7% | $260.82 | $339.17 | +30.0% |
| 22 | APP on Yahoo Finance (opens in a new tab) | Applovin CorpCOM CL A | 1.9% | $238M | 461,611 | Trimmed -33.6% | $62.59 | $267.14 | +326.8% |
| 23 | SNOW on Yahoo Finance (opens in a new tab) | Snowflake IncCOM SHS | 1.8% | $225M | 884,691 | New | $184.02 | $304.05 | +65.2% |
| 24 | TWLO on Yahoo Finance (opens in a new tab) | Twilio IncCL A | 1.4% | $170M | 821,768 | New | $177.28 | $238.88 | +34.7% |
| 25 | STX on Yahoo Finance (opens in a new tab) | Seagate Technology Hldngs PlORD SHS | 1.2% | $143M | 148,543 | New | $761.72 | $651.00 | -14.5% |
| 26 | KVYO on Yahoo Finance (opens in a new tab) | Klaviyo IncCOM SER A | 0.7% | $83M | 5,528,166 | Trimmed -19.0% | $25.68* | $16.88 | -34.3% |
| 27 | NVDA on Yahoo Finance (opens in a new tab) | Nvidia CorporationCOM | 0.6% | $75M | 377,204 | Trimmed -63.8% | $108.74* | $215.30 | +98.0% |
| 28 | MDB on Yahoo Finance (opens in a new tab) | Mongodb IncCL A | 0.6% | $75M | 224,648 | Unchanged | $255.58 | $329.86 | +29.1% |
| 29 | PI on Yahoo Finance (opens in a new tab) | Impinj IncCOM | 0.5% | $58M | 405,244 | Unchanged | $124.67 | $182.99 | +46.8% |
| 30 | DUOL on Yahoo Finance (opens in a new tab) | Duolingo IncCL A COM | 0.4% | $54M | 471,764 | Unchanged | $241.81* | $142.37 | -41.1% |
| 31 | INTC on Yahoo Finance (opens in a new tab) | Intel CorpCOM | 0.3% | $36M | 259,903 | New | $101.12 | $90.88 | -10.1% |
| 32 | AAPL on Yahoo Finance (opens in a new tab) | Apple IncCOM | 0.2% | $29M | 99,766 | Added +3.3% | $260.51 | $342.77 | +31.6% |
| 33 | SPCX on Yahoo Finance (opens in a new tab) | Space Exploration Techn CorpCLASS A COM STK | 0.2% | $26M | 152,517 | New | $170.68 | $144.89 | -15.1% |
| 34 | AVGO on Yahoo Finance (opens in a new tab) | Broadcom IncCOM | 0.2% | $23M | 59,780 | Trimmed -91.9% | $167.55 | $332.05 | +98.2% |
| 35 | CBRS on Yahoo Finance (opens in a new tab) | Cerebras Systems IncCOM CL A | 0.1% | $11M | 50,696 | New | $235.36 | $128.53 | -45.4% |
Sold out since Q1 2026
- AEIS on Yahoo Finance (opens in a new tab)Advanced Energy Inds$330M at Q1 2026
- RBLX on Yahoo Finance (opens in a new tab)Roblox Corp$200M at Q1 2026
- TSEM on Yahoo Finance (opens in a new tab)Tower Semiconductor Ltd$187M at Q1 2026
- CIEN on Yahoo Finance (opens in a new tab)Ciena Corp$90M at Q1 2026
- ARM on Yahoo Finance (opens in a new tab)Arm Holdings PLC$68M at Q1 2026
- MSFT on Yahoo Finance (opens in a new tab)Microsoft Corp$20M at Q1 2026
- NFLX on Yahoo Finance (opens in a new tab)Netflix Inc.$13M at Q1 2026
Estimated, from reported holdings
Quarter by quarter
High-conviction buys (new positions at 3% or more of the portfolio) since Q3 2023: 15. Of 12 with six months of history, 58.3% beat the S&P 500 from the filing date.
Source: SEC Form 13F-HR 0001172661-26-003733, compared with the Q1 2026 report. 0 option rows are excluded from weights. Tickers map from CUSIP via OpenFIGI. Estimated returns weight each position’s next-quarter total return (Yahoo Finance adjusted closes) by its quarter-end value and assume no trades. Estimated cost averages daily adjusted closes in each quarter the share count rose, from Q3 2023 onward (* = held at the start of our data). Price is the latest close.
Important information
Form 13F data is delayed. Managers have up to 45 days after each calendar quarter to file, so holdings shown may have changed materially since the report date. 13F reports cover long positions in US-listed equities and certain other securities only; they exclude short positions, most non-US holdings, cash, bonds and private investments, and managers may request confidential treatment for some positions. Options rows are listed in filings but are not counted in the holdings and weights shown here.
Estimated holdings returns, estimated cost and high-conviction results are hypothetical calculations from quarter-end holdings and public prices, assuming no trades between reports. They are not the actual returns or costs of any fund or manager and do not reflect fees, trading, leverage, shorts or cash. Biographies are drawn from cited public sources. This page is for information only and is not individualized investment advice or a recommendation to buy or sell any security. Gulfstream Capital and its clients may hold positions in securities shown.