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 | |
|---|---|---|---|---|---|---|
3176
Ultralife
ULBI
$113M
| $277K | ﹤0.01% |
40,645
+23,345
| +135% | +$177K |
|
3177
PUT
TripAdvisor
TRIP
$1.19B
| $276K | ﹤0.01% |
+17,000
| New | +$297K |
|
3178
ProShares Large Cap Core Plus
CSM
$527M
| $276K | ﹤0.01% |
+3,600
| New | +$264K |
|
3179
loanDepot
LDI
$301M
| $275K | ﹤0.01% |
+89,576
| New | +$207K |
|
3180
Phibro Animal Health
PAHC
$1.43B
| $275K | ﹤0.01% |
+6,785
| New | +$224K |
|
3181
PUT
Kratos Defense & Security Solutions
KTOS
$9.96B
| $274K | ﹤0.01% |
+3,000
| New | +$192K |
|
3182
Katapult Holdings
KPLT
$490M
| $273K | ﹤0.01% |
+22,867
| New | +$328K |
|
3183
United States Lime & Minerals
USLM
$3.47B
| $273K | ﹤0.01% |
2,076
-39,085
| -95% | -$4.51M |
|
3184
Wheels Up
UP
$184M
| $272K | ﹤0.01% |
+7,396
| New | +$270K |
|
3185
CALL
Phillips 66
PSX
$96.5B
| $272K | ﹤0.01% |
+2,000
| New | +$256K |
|
|
AIRO
3186
AIRO Group Holdings
AIRO
$256M
| $271K | ﹤0.01% |
+14,134
| New | +$310K |
|
3187
Navios Maritime Partners
NMM
$2.55B
| $271K | ﹤0.01% |
6,017
-15,878
| -73% | -$703K |
|
3188
PUT
Halliburton
HAL
$28.9B
| $271K | ﹤0.01% |
+11,000
| New | +$243K |
|
|
OLP
3189
One Liberty Properties
OLP
$537M
| $266K | ﹤0.01% |
+12,013
| New | +$278K |
|
3190
GDS Holdings
GDS
$6.36B
| $266K | ﹤0.01% |
+6,866
| New | +$243K |
|
3191
Autoliv
ALV
$9.02B
| $265K | ﹤0.01% |
2,147
-4,765
| -69% | -$570K |
|
3192
PUT
e.l.f. Beauty
ELF
$6.25B
| $265K | ﹤0.01% |
+2,000
| New | +$247K |
|
|
WBI
3193
WaterBridge Infrastructure LLC
WBI
$1.75B
| $265K | ﹤0.01% |
+10,500
| New | +$246K |
|
3194
Pharvaris
PHVS
$2.62B
| $265K | ﹤0.01% |
+10,607
| New | +$235K |
|
3195
Mid-America Apartment Communities
MAA
$15.4B
| $264K | ﹤0.01% |
1,891
-1,428
| -43% | -$206K |
|
3196
Automatic Data Processing
ADP
$112B
| $264K | ﹤0.01% |
900
-9,400
| -91% | -$2.83M |
|
3197
CALL
HP
HPQ
$26.1B
| $264K | ﹤0.01% |
+9,700
| New | +$259K |
|
3198
GeoPark
GPRK
$639M
| $264K | ﹤0.01% |
41,436
-145,394
| -78% | -$958K |
|
3199
First Trust Horizon Managed Volatility Small/Mid ETF
HSMV
$41M
| $263K | ﹤0.01% |
+7,237
| New | +$262K |
|
3200
PUT
Archer Daniels Midland
ADM
$37.7B
| $263K | ﹤0.01% |
+4,400
| New | +$257K |
|
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.