Two Sigma Investments at a glance
Two Sigma Investments reported 3,615 positions worth $132.9 billion in its 13F-HR for Q2 2026, filed August 14, 2026. Its largest holdings were Western Digital Corp (WDC) at 1.2%, Amazon Com Inc (AMZN) at 1.0% and Nvidia Corporation (NVDA) at 0.9%.
- Versus Q1 2026, it opened 483 new positions, added to 1406, trimmed 1272 and sold out of 297. Reported portfolio value went from $120.5 billion to $132.9 billion.
- The 10 largest positions made up 8.8% of the reported portfolio.
- Largest estimated buys in Q2 2026: Western Digital Corp (WDC) (added, about $1.5 billion), Intuit (INTU) (new position, about $564.2 million) and Wells Fargo & Co (WFC) (added, about $469.6 million).
Source: 13F-HR filings on SEC EDGAR.
- 13F portfolio · Q2 2026
- $132.9B
- +10.3% vs prior quarter
- Positions
- 3,615
- 483 new · 297 sold out
- Top 10 weight
- 8.8%
- Concentration of the 13F book
- Turnover
- 31%
- Quarter-over-quarter
Two Sigma Investments top 13F holdings, Q2 2026
Largest reported positions by market value, from the 13F-HR filed Aug 14, 2026
| # | Company | Weight | Value | Shares | vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Western Digital CorpWDC | 1.15% | $1.5B | 48,556 | Added |
| 2 | Amazon Com IncAMZN | 1.02% | $1.4B | 5,716,287 | Trimmed |
| 3 | Nvidia CorporationNVDA | 0.95% | $1.3B | 6,284,574 | Trimmed |
| 4 | Apple IncAAPL | 0.91% | $1.2B | 4,176,413 | Trimmed |
| 5 | Tesla IncTSLA | 0.91% | $1.2B | 2,861,596 | Held |
| 6 | Berkshire Hathaway IncBRK-A | 0.86% | $1.1B | 2,274,395 | Added |
| 7 | Select Sector Spdr Tr | 0.84% | $1.1B | 18,004,048 | Added |
| 8 | Alphabet IncGOOGL | 0.77% | $1.0B | 6,523,108 | Added |
| 9 | Jpmorgan Chase & CoJPM | 0.73% | $968.1M | 2,957,516 | Trimmed |
| 10 | Mastercard IncorporatedMA | 0.71% | $945.6M | 1,841,139 | Added |
| 11 | Costco Wholesale CorporationCOST | 0.71% | $941.3M | 1,006,231 | Added |
| 12 | Asml Hldg NVASML | 0.69% | $918.1M | 461,505 | Added |
| 13 | Ishares Tr | 0.67% | $888.1M | 5,536,726 | Trimmed |
| 14 | Advanced Micro Devices IncAMD | 0.66% | $880.3M | 1,515,419 | Added |
| 15 | Citigroup IncC | 0.63% | $831.1M | 5,938,026 | Added |
| 16 | Boston Scientific CorpBSX | 0.62% | $826.2M | 19,359,023 | Added |
| 17 | Lockheed Martin CorpLMT | 0.60% | $799.8M | 1,569,836 | Added |
| 18 | Intuitive Surgical IncISRG | 0.59% | $787.1M | 1,979,128 | Added |
| 19 | Schwab Charles CorpSCHW | 0.58% | $777.4M | 8,425,755 | Added |
| 20 | Kimberly-clark CorpKMB | 0.58% | $774.4M | 7,054,632 | Added |
Source: Two Sigma Investments 13F-HR on SEC EDGAR. Long equity positions only (put and call options excluded); weights are shares of the reported 13F portfolio, not total assets. How 13F filings work
Two Sigma Investments biggest buys and sells, Q2 2026
Largest estimated position changes versus Q1 2026
| Company | Move | Est. flow | Shares now | Weight now |
|---|---|---|---|---|
| Transmedics Group IncTMDX | Trimmed | −$2.6B | 8,945 | 0.06% |
| Micron Technology IncMU | Trimmed | −$2.0B | 535,173 | 0.47% |
| Western Digital CorpWDC | Added | +$1.5B | 48,556 | 1.15% |
| Sandisk CorpSNDK | Trimmed | −$1.2B | 241,675 | 0.41% |
| Dell Technologies IncDELL | Trimmed | −$1.0B | 655,299 | 0.21% |
| Nvidia CorporationNVDA | Trimmed | −$990.4M | 6,284,574 | 0.95% |
| Ishares Tr | Trimmed | −$648.7M | 5,536,726 | 0.67% |
| Broadcom IncAVGO | Trimmed | −$628.8M | 560,530 | 0.16% |
| Unitedhealth Group IncUNH | Trimmed | −$624.9M | 196,716 | 0.06% |
| IntuitINTU | New | +$564.2M | 2,161,507 | 0.42% |
| Lam Research CorpLRCX | Trimmed | −$553.4M | 225,152 | 0.07% |
| Apple IncAAPL | Trimmed | −$511.6M | 4,176,413 | 0.91% |
Estimated flow = change in share count × quarter-end price (483 new, 1406 added, 1272 trimmed, 297 sold out). 13F reports show holdings on the last day of the quarter, not the trade dates.
SignalX for Two Sigma Investments
Don't miss the next Two Sigma Investments filing
- 13F alerts. A push when Two Sigma Investments files a new 13F or a 13D stake.
- Smart Money consensus. Which stocks Two Sigma Investments and other tracked funds bought together.
- Ask anything. An AI agent that reads every Two Sigma Investments filing and answers with sources.
Two Sigma Investments alerts on your phone. Follow it in the SignalX Android app.
Latest Two Sigma Investments SEC filings
Two Sigma Investments 13F holdings: frequently asked questions
What stocks does Two Sigma Investments own?
In its 13F-HR for Q2 2026 (filed August 14, 2026), Two Sigma Investments reported 3,615 positions worth $132.9 billion. The largest were Western Digital Corp (WDC), 1.2%; Amazon Com Inc (AMZN), 1.0%; Nvidia Corporation (NVDA), 0.9%; Apple Inc (AAPL), 0.9%; Tesla Inc (TSLA), 0.9%. The top 10 positions were 8.8% of the portfolio.
What did Two Sigma Investments buy in Q2 2026?
Compared with Q1 2026, Two Sigma Investments's largest estimated purchases were Western Digital Corp (WDC) (added, about $1.5 billion), Intuit (INTU) (new position, about $564.2 million), Wells Fargo & Co (WFC) (added, about $469.6 million), Super Micro Computer Inc (SMCI) (added, about $449.4 million) and Boston Scientific Corp (BSX) (added, about $424.6 million). In total it opened 483 new positions and added to 1406. Amounts are estimated from share-count changes at quarter-end prices.
What did Two Sigma Investments sell in Q2 2026?
Compared with Q1 2026, Two Sigma Investments's largest estimated sales were Transmedics Group Inc (TMDX) (trimmed, about $2.6 billion), Micron Technology Inc (MU) (trimmed, about $2.0 billion), Sandisk Corp (SNDK) (trimmed, about $1.2 billion), Dell Technologies Inc (DELL) (trimmed, about $1.0 billion) and Nvidia Corporation (NVDA) (trimmed, about $990.4 million). In total it sold out of 297 positions and trimmed 1272.
When does Two Sigma Investments file 13F reports?
Two Sigma Investments's latest 13F-HR was filed August 14, 2026 and covers the quarter ended June 30, 2026. 13F-HR reports are due within 45 days of each quarter-end, so the Q3 2026 report is due by November 14, 2026.
What is Two Sigma Investments's SEC CIK number?
Two Sigma Investments's SEC Central Index Key (CIK) is 1179392. EDGAR lists every Two Sigma Investments filing under that number.
Ask anything about Two Sigma Investments
The research agent reads Two Sigma Investments's filings, financials, insider trades and 13F holders, then answers with sources.