Jane Street Portfolio holdings
Jane Street is an electronic market maker: exchange-traded funds became its main focus after it began with American depositary receipts. Its trading has since grown beyond ETFs into stocks, bonds and options, and it commits its own capital to help institutions with their trading. Tim Reynolds, Robert Granieri and Michael Jenkins, all former traders at Susquehanna International Group, founded it with Marc Gerstein, an IBM developer. The founders named the firm after Jane Street in Greenwich Village, chosen at random, and it has never been based on that street. Its trading relies on mathematical analysis, and it writes nearly all its own software, trading and risk systems included, in OCaml, a functional programming language. It has no CEO and is led informally by a group of senior executives, and every employee is paid from the firm's collective profits rather than personal trading gains.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Semiconductor ETF
SOXX
|
+$2.7B |
| 2 |
NVIDIA
NVDA
|
+$2.58B |
| 3 |
Broadcom
AVGO
|
+$1.8B |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$1.56B |
| 5 |
Tesla
TSLA
|
+$1.16B |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$18.4B |
| 2 |
Sandisk
SNDK
|
+$1.24B |
| 3 |
Seagate
STX
|
+$1.15B |
| 4 |
CoreWeave
CRWV
|
+$1.1B |
| 5 |
Palantir
PLTR
|
+$1.04B |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 94.08% |
| 2 | Technology | 2.3% |
| 3 | Consumer Discretionary | 0.65% |
| 4 | Financials | 0.61% |
| 5 | Industrials | 0.59% |
Similar funds
Jane Street's Q3 2026 Portfolio in Review
As of Q3 2026, Jane Street held 13,768 positions worth $1.19T, down 0.94% from $1.21T the previous quarter. Its ten largest holdings account for 30% of the portfolio.
Jane Street withdrew a net $49.2B in Q3 2026, closing 2,289 positions and reducing 4,430 holdings. Its most notable exit was State Street SPDR Portfolio Developed World ex-US ETF, an estimated $542M position sold in full.
By sector, the portfolio is most concentrated in Miscellaneous at 94% of assets, up from 91% a quarter earlier, followed by Technology and Consumer Discretionary.
Against the trend, Jane Street opened a new position in iShares Core MSCI Total International Stock ETF worth $188M.
- Jane Street's largest Q3 2026 buy was iShares Core MSCI Total International Stock ETF: 1,975,082 shares worth $188M.
- Jane Street added most to iShares Semiconductor ETF in Q3 2026, an estimated $2.7B increase.
- Jane Street's biggest Q3 2026 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $18.4B.
- Jane Street fully exited State Street SPDR Portfolio Developed World ex-US ETF in Q3 2026, selling an estimated $542M.
- Jane Street's ten largest holdings make up 30% of its $1.19T portfolio in Q3 2026.
- Jane Street opened 2,399 new positions and closed 2,289 in Q3 2026.
- Jane Street's portfolio value fell 0.94% quarter-over-quarter to $1.19T.
Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.