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 | |
|---|---|---|---|---|---|---|
2651
Safe Bulkers
SB
$881M
| $798K | ﹤0.01% |
179,725
+75,720
| +73% | +$321K |
|
2652
West Bancorporation
WTBA
$483M
| $797K | ﹤0.01% |
39,200
+19,846
| +103% | +$391K |
|
2653
Kyverna Therapeutics
KYTX
$537M
| $795K | ﹤0.01% |
132,451
+11,867
| +10% | +$47.4K |
|
2654
International General Insurance
IGIC
$1.13B
| $793K | ﹤0.01% |
34,165
-36,957
| -52% | -$885K |
|
2655
First Trust NASDAQ 100 ex-Technology Sector Index Fund
QQXT
$162M
| $791K | ﹤0.01% |
+8,000
| New | +$791K |
|
2656
GrafTech
EAF
$171M
| $791K | ﹤0.01% |
61,711
+44,876
| +267% | +$519K |
|
2657
American Resources Corp
AREC
$278M
| $790K | ﹤0.01% |
+292,547
| New | +$500K |
|
|
IPG
2658
DELISTED
Interpublic Group of Companies
IPG
| $788K | ﹤0.01% |
+28,227
| New | +$728K |
|
2659
BayCom
BCML
$323M
| $787K | ﹤0.01% |
27,377
+8,811
| +47% | +$253K |
|
2660
Sigma Lithium
SGML
$1.37B
| $785K | ﹤0.01% |
+122,539
| New | +$737K |
|
2661
Cal-Maine
CALM
$3.95B
| $783K | ﹤0.01% |
8,319
-20,351
| -71% | -$2.17M |
|
2662
Tompkins Financial
TMP
$1.41B
| $779K | ﹤0.01% |
11,759
-10,968
| -48% | -$735K |
|
2663
NRC Health Common Stock
NRC
$486M
| $778K | ﹤0.01% |
60,912
+30,296
| +99% | +$454K |
|
|
LKFT
2664
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.93B
| $778K | ﹤0.01% |
22,459
+800
| +4% | +$25.6K |
|
|
TALK
2665
DELISTED
Talkspace
TALK
| $778K | ﹤0.01% |
281,859
-219,213
| -44% | -$568K |
|
2666
CALL
Chevron
CVX
$394B
| $776K | ﹤0.01% |
+5,000
| New | +$774K |
|
2667
Daily Journal
DJCO
$833M
| $774K | ﹤0.01% |
+1,664
| New | +$721K |
|
2668
Unisys
UIS
$192M
| $774K | ﹤0.01% |
198,369
-101,555
| -34% | -$412K |
|
2669
Dominari Holdings
DOMH
$62.1M
| $771K | ﹤0.01% |
+108,727
| New | +$635K |
|
|
HONE
2670
DELISTED
HarborOne Bancorp
HONE
| $770K | ﹤0.01% |
56,647
-37,517
| -40% | -$469K |
|
2671
Brown-Forman Class B
BF.B
$12.9B
| $769K | ﹤0.01% |
+28,405
| New | +$823K |
|
2672
PUT
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.08B
| $768K | ﹤0.01% |
25,000
| – | – |
|
2673
MKS Inc
MKSI
$18.3B
| $767K | ﹤0.01% |
6,200
+1,400
| +29% | +$149K |
|
2674
Genworth Financial
GNW
$3.72B
| $766K | ﹤0.01% |
86,028
-196,415
| -70% | -$1.62M |
|
2675
TScan Therapeutics
TCRX
$54.2M
| $763K | ﹤0.01% |
419,404
+54,370
| +15% | +$96.3K |
|
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.