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 | |
|---|---|---|---|---|---|---|
3226
SoFi Social 50 ETF
SFYF
$41.9M
| $247K | ﹤0.01% |
+4,500
| New | +$226K |
|
|
3227
CALL
Accenture
ACN
$114B
| $247K | ﹤0.01% |
+1,000
| New | +$261K |
|
3228
PUT
Celestica
CLS
$37.1B
| $246K | ﹤0.01% |
+1,000
| New | +$202K |
|
|
ZYXI
3229
DELISTED
Zynex
ZYXI
| $244K | ﹤0.01% |
168,481
-51,589
| -23% | -$94.7K |
|
3230
Zevia
ZVIA
$101M
| $244K | ﹤0.01% |
89,596
+74,364
| +488% | +$214K |
|
|
LINE
3231
Lineage Inc
LINE
$9.29B
| $243K | ﹤0.01% |
+6,300
| New | +$262K |
|
3232
ProKidney
PROK
$336M
| $240K | ﹤0.01% |
99,282
+28,583
| +40% | +$76.1K |
|
|
PTRN
3233
Pattern Group Inc
PTRN
$3.81B
| $240K | ﹤0.01% |
+17,500
| New | +$244K |
|
3234
PUT
Carrier Global
CARR
$49.4B
| $239K | ﹤0.01% |
+4,000
| New | +$272K |
|
|
MRSN
3235
DELISTED
Mersana Therapeutics
MRSN
| $238K | ﹤0.01% |
30,688
-2,243
| -7% | -$16.8K |
|
3236
PLDT
PHI
$4.19B
| $238K | ﹤0.01% |
+12,725
| New | +$273K |
|
|
MBX
3237
MBX Biosciences
MBX
$3.2B
| $238K | ﹤0.01% |
+13,587
| New | +$182K |
|
3238
CALL
Huntington Bancshares
HBAN
$34.4B
| $237K | ﹤0.01% |
+13,700
| New | +$234K |
|
3239
Enterprise Financial Services Corp
EFSC
$2.3B
| $237K | ﹤0.01% |
4,080
-600
| -13% | -$34.9K |
|
3240
Solarmax Technology
SMXT
$16.5M
| $236K | ﹤0.01% |
+18,714
| New | +$247K |
|
|
TWO
3241
Two Harbors Investment
TWO
$1.28B
| $235K | ﹤0.01% |
+23,817
| New | +$240K |
|
3242
SELLAS Life Sciences
SLS
$2.89B
| $235K | ﹤0.01% |
145,856
-51,786
| -26% | -$92.2K |
|
3243
WisdomTree US SmallCap Earnings Fund
EES
$720M
| $235K | ﹤0.01% |
4,200
-41,500
| -91% | -$2.25M |
|
3244
Kratos Defense & Security Solutions
KTOS
$9.96B
| $234K | ﹤0.01% |
+2,559
| New | +$164K |
|
3245
T. Rowe Price Growth Stock ETF
TGRW
$993M
| $234K | ﹤0.01% |
5,133
-10,167
| -66% | -$444K |
|
3246
Hippo Holdings
HIPO
$877M
| $234K | ﹤0.01% |
+6,463
| New | +$201K |
|
|
DQ
3247
Daqo New Energy
DQ
$976M
| $233K | ﹤0.01% |
+8,300
| New | +$195K |
|
3248
CALL
Marathon Petroleum
MPC
$102B
| $231K | ﹤0.01% |
+1,200
| New | +$211K |
|
3249
CALL
Rocket Companies
RKT
$39.9B
| $231K | ﹤0.01% |
+11,900
| New | +$208K |
|
3250
China Yuchai International
CYD
$1.45B
| $229K | ﹤0.01% |
5,546
-14,845
| -73% | -$449K |
|
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.