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 | |
|---|---|---|---|---|---|---|
|
THR
1526
DELISTED
Thermon Group Holdings
THR
| $4.17M | 0.01% |
156,246
+133,617
| +590% | +$3.59M |
|
1527
Prothena Corp
PRTA
$482M
| $4.16M | 0.01% |
426,605
+225,155
| +112% | +$1.73M |
|
1528
BWX Technologies
BWXT
$13.7B
| $4.15M | 0.01% |
22,495
+2,561
| +13% | +$412K |
|
1529
Wave Life Sciences
WVE
$1.01B
| $4.12M | 0.01% |
563,004
+319,837
| +132% | +$2.59M |
|
|
CNR
1530
Core Natural Resources Inc
CNR
$4.78B
| $4.12M | 0.01% |
+49,364
| New | +$3.7M |
|
1531
SM Energy
SM
$8.67B
| $4.12M | 0.01% |
164,864
+90,001
| +120% | +$2.43M |
|
1532
CALL
VanEck Semiconductor ETF
SMH
$64.8B
| $4.11M | 0.01% |
+12,600
| New | +$3.73M |
|
1533
PUT
Northern Oil and Gas
NOG
$2.86B
| $4.1M | 0.01% |
165,300
| – | – |
|
1534
Grocery Outlet
GO
$1.19B
| $4.09M | 0.01% |
255,020
-419,896
| -62% | -$6.71M |
|
1535
Incyte
INCY
$25.9B
| $4.08M | 0.01% |
48,149
-16,200
| -25% | -$1.28M |
|
1536
Builders FirstSource
BLDR
$7.56B
| $4.08M | 0.01% |
33,677
-244,733
| -88% | -$32.5M |
|
1537
Novartis
NVS
$300B
| $4.07M | 0.01% |
31,728
-302,771
| -91% | -$36.9M |
|
1538
Xometry
XMTR
$4.85B
| $4.05M | 0.01% |
74,297
+42,897
| +137% | +$1.86M |
|
1539
Devon Energy
DVN
$53.1B
| $4.05M | 0.01% |
115,402
+1,999
| +2% | +$68K |
|
1540
Capital Group Growth ETF
CGGR
$25B
| $4.05M | 0.01% |
92,100
-288,000
| -76% | -$12.2M |
|
1541
Par Pacific Holdings
PARR
$3.72B
| $4.04M | 0.01% |
114,112
+11,898
| +12% | +$387K |
|
1542
Lamar Advertising Co
LAMR
$15.5B
| $4.04M | 0.01% |
33,011
+21,250
| +181% | +$2.64M |
|
1543
PUT
Microsoft
MSFT
$3.62T
| $4.04M | 0.01% |
+7,800
| New | +$3.98M |
|
1544
iShares MSCI Taiwan ETF
EWT
$11.2B
| $4.03M | 0.01% |
63,300
-84,200
| -57% | -$5.07M |
|
1545
Palomar
PLMR
$3.5B
| $4.02M | 0.01% |
34,474
+977
| +3% | +$124K |
|
1546
State Street SPDR S&P Capital Markets ETF
KCE
$484M
| $4.02M | 0.01% |
+26,300
| New | +$4.03M |
|
1547
Adient
ADNT
$1.46B
| $4.01M | 0.01% |
166,335
-237,872
| -59% | -$5.56M |
|
1548
York Water
YORW
$561M
| $4M | 0.01% |
131,581
+52,376
| +66% | +$1.62M |
|
1549
Vail Resorts
MTN
$5.35B
| $3.99M | 0.01% |
26,698
+7,107
| +36% | +$1.1M |
|
1550
German American Bancorp
GABC
$1.88B
| $3.99M | 0.01% |
101,666
+95,892
| +1,661% | +$3.86M |
|
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.