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 | |
|---|---|---|---|---|---|---|
2576
Pacer Data & Infrastructure Real Estate ETF
SRVR
$388M
| $900K | ﹤0.01% |
+28,400
| New | +$903K |
|
2577
Warner Music
WMG
$14.7B
| $899K | ﹤0.01% |
26,399
-77,150
| -75% | -$2.46M |
|
2578
iShares Paris-Aligned Climate Optimized MSCI USA ETF
PABU
$2.53B
| $898K | ﹤0.01% |
12,500
-400
| -3% | -$27.6K |
|
|
RAPT
2579
DELISTED
RAPT Therapeutics
RAPT
| $898K | ﹤0.01% |
34,818
-8,803
| -20% | -$115K |
|
2580
First Western Financial
MYFW
$303M
| $897K | ﹤0.01% |
+38,966
| New | +$889K |
|
2581
Citi Trends
CTRN
$581M
| $890K | ﹤0.01% |
28,670
-29,279
| -51% | -$947K |
|
2582
ProQR Therapeutics
PRQR
$336M
| $889K | ﹤0.01% |
417,300
+193,260
| +86% | +$422K |
|
2583
CALL
Ford
F
$55.6B
| $889K | ﹤0.01% |
+74,300
| New | +$856K |
|
2584
Townsquare Media
TSQ
$107M
| $888K | ﹤0.01% |
132,210
-863
| -0.6% | -$6.25K |
|
|
AFGR
2585
First Trust Active Factor Large Cap Growth ETF
AFGR
$92.6M
| $888K | ﹤0.01% |
24,500
+3,600
| +17% | +$125K |
|
2586
Covenant Logistics
CVLG
$890M
| $888K | ﹤0.01% |
40,982
+1,068
| +3% | +$25.5K |
|
2587
Exelon
EXC
$45.7B
| $887K | ﹤0.01% |
19,700
-52,100
| -73% | -$2.29M |
|
2588
Seagate
STX
$186B
| $885K | ﹤0.01% |
3,748
-4,496
| -55% | -$767K |
|
|
CWBC
2589
Community West Bancshares
CWBC
$705M
| $883K | ﹤0.01% |
42,356
+18,151
| +75% | +$374K |
|
2590
PUT
First Solar
FSLR
$22.2B
| $882K | ﹤0.01% |
+4,000
| New | +$768K |
|
2591
PUT
Boston Scientific
BSX
$72.3B
| $879K | ﹤0.01% |
+9,000
| New | +$932K |
|
2592
InfuSystem Holdings
INFU
$239M
| $876K | ﹤0.01% |
84,597
+29,821
| +54% | +$247K |
|
2593
Medallion Financial
MFIN
$275M
| $875K | ﹤0.01% |
86,634
+26,091
| +43% | +$266K |
|
2594
Heron Therapeutics
HRTX
$61.3M
| $872K | ﹤0.01% |
692,279
-248,303
| -26% | -$394K |
|
|
NESR
2595
National Energy Services Reunited Corp
NESR
$3.38B
| $871K | ﹤0.01% |
+84,884
| New | +$680K |
|
2596
Northeast Community Bancorp
NECB
$364M
| $870K | ﹤0.01% |
+42,291
| New | +$932K |
|
2597
Newell Brands
NWL
$2.53B
| $866K | ﹤0.01% |
165,284
-45,622
| -22% | -$259K |
|
2598
Chunghwa Telecom
CHT
$33.5B
| $866K | ﹤0.01% |
+19,846
| New | +$882K |
|
2599
Immersion
IMMR
$254M
| $864K | ﹤0.01% |
117,739
+45,881
| +64% | +$333K |
|
2600
PUT
Realty Income
O
$59.5B
| $863K | ﹤0.01% |
+14,200
| New | +$827K |
|
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.