John Overdeck Two Sigma Investments
John Overdeck is a co-founder of Two Sigma Investments, one of the world’s leading quantitative and technology-driven investment firms. Two Sigma applies data science, machine learning, and large-scale computing to markets across asset classes. Overdeck’s firm is a central reference point in discussions of modern systematic investing.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$474M |
| 2 |
State Street Consumer Staples Select Sector SPDR ETF
XLP
|
+$357M |
| 3 |
Accenture
ACN
|
+$246M |
| 4 |
Advanced Micro Devices
AMD
|
+$235M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$231M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$381M |
| 2 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$375M |
| 3 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$348M |
| 4 |
Thermo Fisher Scientific
TMO
|
+$292M |
| 5 |
Snowflake
SNOW
|
+$258M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.18% |
| 2 | Financials | 15.54% |
| 3 | Industrials | 10.5% |
| 4 | Healthcare | 9.8% |
| 5 | Consumer Discretionary | 8.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1351
Analog Devices
ADI
$181B
| $5.25M | 0.01% |
21,377
| – | – |
|
1352
Washington Trust Bancorp
WASH
$758M
| $5.25M | 0.01% |
181,692
+27,625
| +18% | +$799K |
|
1353
Oscar Health
OSCR
$9.82B
| $5.25M | 0.01% |
277,340
-1,089,225
| -80% | -$18M |
|
1354
Rocket Pharmaceuticals
RCKT
$388M
| $5.25M | 0.01% |
1,609,682
-115,678
| -7% | -$364K |
|
1355
Oil-Dri
ODC
$1.34B
| $5.24M | 0.01% |
85,798
+45,294
| +112% | +$2.75M |
|
|
SBXD
1356
SilverBox Corp IV
SBXD
$285M
| $5.24M | 0.01% |
500,000
| – | – |
|
1357
AMC Global Media
AMCX
$512M
| $5.23M | 0.01% |
635,122
+104,990
| +20% | +$728K |
|
|
POLE
1358
Andretti Acquisition Corp II
POLE
$320M
| $5.23M | 0.01% |
500,000
| – | – |
|
1359
Progress Software
PRGS
$1.78B
| $5.23M | 0.01% |
119,001
+58,382
| +96% | +$2.69M |
|
|
LPBB
1360
Launch Two Acquisition Corp
LPBB
$310M
| $5.22M | 0.01% |
500,000
| – | – |
|
|
ALDF
1361
Aldel Financial II Inc
ALDF
$322M
| $5.22M | 0.01% |
500,000
| – | – |
|
|
PSIX
1362
Power Solutions International
PSIX
$807M
| $5.18M | 0.01% |
52,769
-57,303
| -52% | -$5.08M |
|
1363
Community Health Systems
CYH
$424M
| $5.18M | 0.01% |
1,614,362
-76,959
| -5% | -$231K |
|
1364
National Healthcare
NHC
$3.58B
| $5.18M | 0.01% |
42,644
-8,275
| -16% | -$893K |
|
1365
Bread Financial
BFH
$4.04B
| $5.15M | 0.01% |
92,300
+17,083
| +23% | +$1.05M |
|
1366
Procept Biorobotics
PRCT
$1.22B
| $5.15M | 0.01% |
144,181
-203,967
| -59% | -$9.31M |
|
|
PLMK
1367
Plum Acquisition Corp IV
PLMK
$114M
| $5.14M | 0.01% |
498,437
| – | – |
|
1368
WisdomTree US LargeCap Fund
EPS
$1.65B
| $5.14M | 0.01% |
74,500
+20,100
| +37% | +$1.34M |
|
1369
Fidelity Low Volatility Factor ETF
FDLO
$1.44B
| $5.13M | 0.01% |
+77,900
| New | +$5M |
|
1370
Structure Therapeutics
GPCR
$3.49B
| $5.12M | 0.01% |
+182,911
| New | +$3.64M |
|
1371
Northrim BanCorp
NRIM
$573M
| $5.12M | 0.01% |
236,425
+139,137
| +143% | +$3.15M |
|
1372
US Physical Therapy
USPH
$1.15B
| $5.12M | 0.01% |
60,267
+52,907
| +719% | +$4.24M |
|
|
HDRN
1373
Hadron Energy
HDRN
$134M
| $5.11M | 0.01% |
483,905
| – | – |
|
1374
Credicorp
BAP
$30.2B
| $5.09M | 0.01% |
19,133
-59,912
| -76% | -$14.8M |
|
1375
CALL
Apple
AAPL
$4.53T
| $5.09M | 0.01% |
+20,000
| New | +$4.52M |
|
Similar funds
John Overdeck's Q3 2025 Portfolio in Review
As of Q3 2025, John Overdeck held 4,027 positions worth $67.2B, up 19% from $56.5B the previous quarter. Its ten largest holdings account for 6.2% of the portfolio.
John Overdeck deployed $4.46B of net new capital in Q3 2025, opening 877 new positions and adding to 1,461 existing holdings. Its largest new stake was Berkshire Hathaway Class B: 379,096 shares worth $191M.
By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Financials and Industrials.
On the sell side, the largest reduction was Invesco QQQ Trust, an estimated $381M trimmed.
- John Overdeck's largest Q3 2025 buy was Berkshire Hathaway Class B: 379,096 shares worth $191M.
- John Overdeck added most to State Street Financial Select Sector SPDR ETF in Q3 2025, an estimated $474M increase.
- John Overdeck's biggest Q3 2025 reduction was Invesco QQQ Trust, cutting an estimated $381M.
- John Overdeck fully exited NextEra Energy, Inc. 6.926% Corporate Units in Q3 2025, selling an estimated $115M.
- John Overdeck's ten largest holdings make up 6.2% of its $67.2B portfolio in Q3 2025.
- John Overdeck opened 877 new positions and closed 399 in Q3 2025.
- John Overdeck's portfolio value rose 19% quarter-over-quarter to $67.2B.
Based on Two Sigma Investments's 13F filing for Q3 2025, filed 14 Nov 2025.