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 | |
|---|---|---|---|---|---|---|
1601
PUT
Apple
AAPL
$4.53T
| $3.82M | 0.01% |
+15,000
| New | +$3.39M |
|
|
TWFG
1602
TWFG Inc
TWFG
$390M
| $3.82M | 0.01% |
139,192
+39,663
| +40% | +$1.15M |
|
1603
iRadimed
IRMD
$1.11B
| $3.82M | 0.01% |
53,647
+13,417
| +33% | +$894K |
|
|
EU
1604
enCore Energy
EU
$241M
| $3.8M | 0.01% |
+1,185,050
| New | +$3.19M |
|
1605
Avantis US Large Cap Value ETF
AVLV
$19.2B
| $3.79M | 0.01% |
+52,500
| New | +$3.71M |
|
1606
EnerSys
ENS
$6.76B
| $3.79M | 0.01% |
+33,553
| New | +$3.3M |
|
1607
Sable Offshore Corp
SOC
$934M
| $3.79M | 0.01% |
216,990
-204,859
| -49% | -$5.25M |
|
1608
CNO Financial Group
CNO
$5.02B
| $3.78M | 0.01% |
95,456
+68,422
| +253% | +$2.61M |
|
1609
St. Joe Company
JOE
$3.99B
| $3.77M | 0.01% |
76,271
-96,063
| -56% | -$4.84M |
|
1610
ACV Auctions
ACVA
$1.27B
| $3.77M | 0.01% |
+380,557
| New | +$4.87M |
|
1611
Kayne Anderson Energy Infrastructure Fund
KYN
$2.47B
| $3.77M | 0.01% |
304,871
-15,483
| -5% | -$191K |
|
1612
First Financial Bancorp
FFBC
$3.46B
| $3.76M | 0.01% |
148,968
+33,015
| +28% | +$837K |
|
1613
Genco Shipping & Trading
GNK
$1.17B
| $3.76M | 0.01% |
211,093
+6,876
| +3% | +$114K |
|
|
TAVI
1614
Tavia Acquisition Corp
TAVI
$171M
| $3.75M | 0.01% |
362,500
| – | – |
|
1615
CTS Corp
CTS
$1.6B
| $3.75M | 0.01% |
+93,890
| New | +$3.89M |
|
1616
ProShares Short VIX Short-Term Futures ETF
SVXY
$243M
| $3.75M | 0.01% |
+73,571
| New | +$3.46M |
|
1617
Verastem
VSTM
$621M
| $3.75M | 0.01% |
424,252
-162,769
| -28% | -$1.21M |
|
1618
Biglari Holdings Class B
BH
$1.2B
| $3.74M | 0.01% |
11,563
+7,163
| +163% | +$2.19M |
|
1619
AdvanSix
ASIX
$454M
| $3.74M | 0.01% |
192,972
+151,003
| +360% | +$3.17M |
|
1620
Illinois Tool Works
ITW
$80.9B
| $3.73M | 0.01% |
14,311
-82,349
| -85% | -$21.5M |
|
1621
PennantPark Floating Rate Capital
PFLT
$740M
| $3.72M | 0.01% |
418,365
-524,436
| -56% | -$5.37M |
|
1622
Watts Water Technologies
WTS
$12.4B
| $3.72M | 0.01% |
13,305
-7,472
| -36% | -$2M |
|
1623
Diamondrock Hospitality Co
DRH
$2.61B
| $3.71M | 0.01% |
465,949
+408,132
| +706% | +$3.3M |
|
1624
Vir Biotechnology
VIR
$1.68B
| $3.71M | 0.01% |
649,300
+279,685
| +76% | +$1.43M |
|
1625
F&G Annuities & Life
FG
$3.03B
| $3.71M | 0.01% |
118,495
+61,366
| +107% | +$2.03M |
|
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.