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 | |
|---|---|---|---|---|---|---|
1701
PACS Group
PACS
$7.01B
| $3.34M | 0.01% |
243,120
+37,895
| +18% | +$445K |
|
1702
Peoples Bancorp
PEBO
$1.43B
| $3.33M | 0.01% |
110,917
+4,756
| +4% | +$144K |
|
1703
Ironwood Pharmaceuticals
IRWD
$682M
| $3.32M | ﹤0.01% |
2,534,511
-216,062
| -8% | -$224K |
|
1704
Radware
RDWR
$1.16B
| $3.32M | ﹤0.01% |
125,313
+56,978
| +83% | +$1.52M |
|
1705
D.R. Horton
DHI
$41.7B
| $3.32M | ﹤0.01% |
19,565
-1,414,406
| -99% | -$222M |
|
|
INAC
1706
Indigo Acquisition Corp
INAC
| $3.31M | ﹤0.01% |
+332,291
| New | +$3.31M |
|
1707
Williams Companies
WMB
$86.8B
| $3.31M | ﹤0.01% |
52,272
-258,337
| -83% | -$15.2M |
|
1708
Vanda Pharmaceuticals
VNDA
$322M
| $3.3M | ﹤0.01% |
662,305
+135,439
| +26% | +$627K |
|
1709
iShares MSCI Mexico ETF
EWW
$1.79B
| $3.3M | ﹤0.01% |
48,400
+4,000
| +9% | +$250K |
|
|
CSGS
1710
DELISTED
CSG Systems International
CSGS
| $3.3M | ﹤0.01% |
51,277
-12,762
| -20% | -$813K |
|
|
NMP
1711
NMP Acquisition Corp
NMP
$165M
| $3.3M | ﹤0.01% |
+332,291
| New | +$3.3M |
|
1712
Varex Imaging
VREX
$781M
| $3.3M | ﹤0.01% |
266,079
+3,023
| +1% | +$30K |
|
1713
Forestar Group
FOR
$1.47B
| $3.28M | ﹤0.01% |
123,417
+44,590
| +57% | +$1.14M |
|
|
CRCL
1714
Circle Internet Group
CRCL
$22.3B
| $3.27M | ﹤0.01% |
24,680
-244,920
| -91% | -$38.8M |
|
1715
CALL
Super Micro Computer
SMCI
$22.8B
| $3.26M | ﹤0.01% |
+68,000
| New | +$3.25M |
|
1716
Ashland
ASH
$3.38B
| $3.26M | ﹤0.01% |
+68,002
| New | +$3.57M |
|
1717
MoonLake Immunotherapeutics
MLTX
$1.31B
| $3.26M | ﹤0.01% |
+454,268
| New | +$23.7M |
|
1718
NVR
NVR
$17B
| $3.25M | ﹤0.01% |
405
+305
| +305% | +$2.42M |
|
|
BBNX
1719
Beta Bionics
BBNX
$888M
| $3.25M | ﹤0.01% |
163,764
+142,468
| +669% | +$2.5M |
|
1720
PUT
iShares Bitcoin Trust
IBIT
$59.5B
| $3.25M | ﹤0.01% |
+50,000
| New | +$3.25M |
|
1721
Old Second Bancorp
OSBC
$1.29B
| $3.25M | ﹤0.01% |
187,791
+66,340
| +55% | +$1.19M |
|
1722
ASP Isotopes
ASPI
$596M
| $3.24M | ﹤0.01% |
337,245
-5,667
| -2% | -$52.3K |
|
1723
Crescent Energy
CRGY
$4.58B
| $3.24M | ﹤0.01% |
363,690
+301,092
| +481% | +$2.74M |
|
1724
Hexcel
HXL
$7B
| $3.24M | ﹤0.01% |
51,604
-79,037
| -60% | -$4.85M |
|
1725
JPMorgan Active Growth ETF
JGRO
$9.8B
| $3.23M | ﹤0.01% |
34,500
-427,800
| -93% | -$38.2M |
|
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.