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 | |
|---|---|---|---|---|---|---|
|
TGB
2701
Trekor Metals
TGB
$3.51B
| $738K | ﹤0.01% |
+174,451
| New | +$593K |
|
|
SMLR
2702
DELISTED
Semler Scientific
SMLR
| $738K | ﹤0.01% |
24,586
-56,194
| -70% | -$1.93M |
|
|
PGRE
2703
DELISTED
Paramount Group
PGRE
| $737K | ﹤0.01% |
112,673
-534,543
| -83% | -$3.55M |
|
2704
NWPX Infrastructure Inc
NWPX
$1.06B
| $736K | ﹤0.01% |
13,909
-14,031
| -50% | -$670K |
|
2705
EPR Properties
EPR
$4.66B
| $736K | ﹤0.01% |
12,680
-153,730
| -92% | -$8.64M |
|
2706
CALL
Texas Instruments
TXN
$237B
| $735K | ﹤0.01% |
+4,000
| New | +$782K |
|
2707
CALL
Meta Platforms (Facebook)
META
$1.44T
| $734K | ﹤0.01% |
+1,000
| New | +$744K |
|
2708
MacroGenics
MGNX
$265M
| $734K | ﹤0.01% |
437,091
+29,803
| +7% | +$48.2K |
|
2709
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$54B
| $732K | ﹤0.01% |
7,000
-677,400
| -99% | -$67.5M |
|
2710
VTEX
VTEX
$592M
| $729K | ﹤0.01% |
166,461
-338,309
| -67% | -$1.71M |
|
2711
Quantum-Si Incorporated
QSI
$185M
| $727K | ﹤0.01% |
515,852
-48,590
| -9% | -$70.2K |
|
2712
Enanta Pharmaceuticals
ENTA
$419M
| $727K | ﹤0.01% |
60,722
-17,733
| -23% | -$142K |
|
2713
ARS Pharmaceuticals
SPRY
$553M
| $725K | ﹤0.01% |
+72,177
| New | +$1.04M |
|
2714
NCR Atleos
NATL
$3.42B
| $723K | ﹤0.01% |
+18,400
| New | +$640K |
|
2715
PUT
GE Aerospace
GE
$360B
| $722K | ﹤0.01% |
+2,400
| New | +$656K |
|
2716
PUT
SLB Ltd
SLB
$78.9B
| $722K | ﹤0.01% |
+21,000
| New | +$731K |
|
2717
Cambria Shareholder Yield ETF
SYLD
$1.02B
| $721K | ﹤0.01% |
+10,500
| New | +$711K |
|
2718
CALL
PG&E
PCG
$40.1B
| $719K | ﹤0.01% |
+47,700
| New | +$696K |
|
2719
iShares Expanded Tech Sector ETF
IGM
$10.4B
| $718K | ﹤0.01% |
5,700
-93,300
| -94% | -$11M |
|
2720
CALL
Sysco
SYY
$40B
| $716K | ﹤0.01% |
+8,700
| New | +$696K |
|
2721
PENN Entertainment
PENN
$2.43B
| $715K | ﹤0.01% |
37,121
+106
| +0.3% | +$1.99K |
|
2722
OP Bancorp
OPBK
$227M
| $715K | ﹤0.01% |
+51,352
| New | +$710K |
|
2723
Tiptree Inc
TIPT
$682M
| $715K | ﹤0.01% |
37,282
+9,006
| +32% | +$201K |
|
2724
PUT
Datadog
DDOG
$79.7B
| $712K | ﹤0.01% |
+5,000
| New | +$688K |
|
|
AHL
2725
DELISTED
Aspen Insurance
AHL
| $706K | ﹤0.01% |
19,222
+11,722
| +156% | +$385K |
|
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.