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 | |
|---|---|---|---|---|---|---|
|
USAS
1751
Americas Gold and Silver
USAS
$1.83B
| $3.11M | ﹤0.01% |
836,200
+328,720
| +65% | +$859K |
|
1752
Rogers Corp
ROG
$2.23B
| $3.11M | ﹤0.01% |
+38,600
| New | +$2.87M |
|
1753
Celcuity
CELC
$4.56B
| $3.1M | ﹤0.01% |
+62,779
| New | +$2.51M |
|
1754
McCormick & Company Non-Voting
MKC
$14.9B
| $3.1M | ﹤0.01% |
46,305
-1,085,011
| -96% | -$76M |
|
1755
Moelis & Co
MC
$5.05B
| $3.09M | ﹤0.01% |
43,346
+3,362
| +8% | +$240K |
|
1756
Rush Enterprises Class A
RUSHA
$8.5B
| $3.09M | ﹤0.01% |
57,751
-67,235
| -54% | -$3.74M |
|
1757
Korro Bio
KRRO
$202M
| $3.09M | ﹤0.01% |
64,455
+27,709
| +75% | +$615K |
|
|
OKLO
1758
CALL
Oklo
OKLO
$7.52B
| $3.08M | ﹤0.01% |
+27,600
| New | +$2.16M |
|
1759
Ciena
CIEN
$54.3B
| $3.07M | ﹤0.01% |
21,101
-99,703
| -83% | -$10.2M |
|
1760
M&T Bank
MTB
$34.7B
| $3.07M | ﹤0.01% |
15,544
-96,259
| -86% | -$18.9M |
|
1761
AXIS Capital
AXS
$7.22B
| $3.07M | ﹤0.01% |
32,041
+2,906
| +10% | +$281K |
|
|
FFWM
1762
DELISTED
First Foundation Inc
FFWM
| $3.07M | ﹤0.01% |
550,398
+441,545
| +406% | +$2.44M |
|
|
ODP
1763
DELISTED
ODP
ODP
| $3.06M | ﹤0.01% |
109,978
-231,738
| -68% | -$4.76M |
|
1764
STAAR Surgical
STAA
$1.16B
| $3.06M | ﹤0.01% |
113,857
-293,524
| -72% | -$7M |
|
|
STEL
1765
DELISTED
Stellar Bancorp
STEL
| $3.06M | ﹤0.01% |
+100,694
| New | +$3.06M |
|
1766
O'Reilly Automotive
ORLY
$73.8B
| $3.05M | ﹤0.01% |
28,324
+1,231
| +5% | +$124K |
|
1767
Nuveen NASDAQ 100 Dynamic Overwrite Fund
QQQX
$1.49B
| $3.05M | ﹤0.01% |
110,997
+32,070
| +41% | +$860K |
|
1768
First Trust Nasdaq-100 Select Equal Weight ETF
QQEW
$1.86B
| $3.05M | ﹤0.01% |
+21,600
| New | +$2.97M |
|
1769
Pennant Group
PNTG
$1.36B
| $3.05M | ﹤0.01% |
120,852
-55,536
| -31% | -$1.36M |
|
1770
Bank First Corp
BFC
$1.69B
| $3.05M | ﹤0.01% |
25,112
+17,011
| +210% | +$2.12M |
|
1771
Trane Technologies
TT
$100B
| $3.04M | ﹤0.01% |
7,200
-121,455
| -94% | -$51.9M |
|
1772
Avantis US Small Cap Value ETF
AVUV
$31.2B
| $3.04M | ﹤0.01% |
30,500
+23,700
| +349% | +$2.29M |
|
|
NLOP
1773
Net Lease Office Properties
NLOP
$170M
| $3.03M | ﹤0.01% |
102,280
+2,370
| +2% | +$74.4K |
|
1774
National Fuel Gas
NFG
$7.78B
| $3.03M | ﹤0.01% |
32,842
-146,235
| -82% | -$12.7M |
|
1775
Origin Bancorp
OBK
$1.64B
| $3.03M | ﹤0.01% |
87,808
+60,472
| +221% | +$2.24M |
|
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.