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 | |
|---|---|---|---|---|---|---|
|
NREF
3151
NexPoint Real Estate Finance
NREF
$332M
| $291K | ﹤0.01% |
20,511
+776
| +4% | +$11.2K |
|
3152
ICL Group
ICL
$7.42B
| $291K | ﹤0.01% |
46,711
-31,189
| -40% | -$200K |
|
3153
SR Bancorp
SRBK
$143M
| $290K | ﹤0.01% |
+19,241
| New | +$280K |
|
|
GNTY
3154
DELISTED
Guaranty Bancshares
GNTY
| $290K | ﹤0.01% |
5,943
-9,310
| -61% | -$436K |
|
|
MAZE
3155
Maze Therapeutics
MAZE
$1.64B
| $289K | ﹤0.01% |
+11,150
| New | +$188K |
|
3156
Verra Mobility
VRRM
$679M
| $288K | ﹤0.01% |
11,661
-5,745
| -33% | -$142K |
|
3157
CALL
Celsius Holdings
CELH
$8.86B
| $287K | ﹤0.01% |
+5,000
| New | +$261K |
|
3158
CVRx
CVRX
$83.9M
| $286K | ﹤0.01% |
35,390
-52,201
| -60% | -$393K |
|
3159
Photronics
PLAB
$1.74B
| $285K | ﹤0.01% |
12,416
+1,621
| +15% | +$34.7K |
|
3160
American Well
AMWL
$203M
| $285K | ﹤0.01% |
46,329
+8,553
| +23% | +$62.9K |
|
3161
PUT
Moderna
MRNA
$55.4B
| $284K | ﹤0.01% |
+11,000
| New | +$307K |
|
3162
AN2 Therapeutics
ANTX
$212M
| $284K | ﹤0.01% |
223,337
-15,010
| -6% | -$17.2K |
|
3163
PUT
Arm
ARM
$255B
| $283K | ﹤0.01% |
+2,000
| New | +$291K |
|
3164
PUT
Amgen
AMGN
$240B
| $282K | ﹤0.01% |
+1,000
| New | +$290K |
|
|
AUTL
3165
Autolus Therapeutics
AUTL
$623M
| $281K | ﹤0.01% |
172,143
+25,346
| +17% | +$49.5K |
|
3166
Fresenius Medical Care
FMS
$12.5B
| $280K | ﹤0.01% |
10,642
-10,000
| -48% | -$257K |
|
3167
Nuveen S&P 500 Dynamic Overwrite Fund
SPXX
$342M
| $280K | ﹤0.01% |
+15,997
| New | +$287K |
|
3168
GrowGeneration
GRWG
$102M
| $279K | ﹤0.01% |
+149,263
| New | +$205K |
|
3169
CALL
Opendoor
OPEN
$3.33B
| $279K | ﹤0.01% |
+36,167
| New | +$147K |
|
3170
PDF Solutions
PDFS
$1.86B
| $278K | ﹤0.01% |
+10,758
| New | +$235K |
|
3171
CALL
Southwest Airlines
LUV
$19.9B
| $278K | ﹤0.01% |
+8,700
| New | +$285K |
|
3172
Northern Trust STOXX US ESG Select ETF
ESG
$136M
| $278K | ﹤0.01% |
+1,800
| New | +$270K |
|
|
BKV
3173
BKV Corp
BKV
$2.65B
| $278K | ﹤0.01% |
+12,000
| New | +$262K |
|
3174
CALL
Rivian
RIVN
$24B
| $277K | ﹤0.01% |
+18,900
| New | +$253K |
|
3175
Duos Technologies
DUOT
$323M
| $277K | ﹤0.01% |
+37,664
| New | +$268K |
|
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.