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 | |
|---|---|---|---|---|---|---|
2726
Geospace Technologies
GEOS
$69.5M
| $701K | ﹤0.01% |
36,976
+21,705
| +142% | +$352K |
|
2727
State Street SPDR Portfolio S&P 500 High Dividend ETF
SPYD
$7.81B
| $700K | ﹤0.01% |
+15,900
| New | +$697K |
|
2728
Aclaris Therapeutics
ACRS
$929M
| $699K | ﹤0.01% |
368,107
-381,553
| -51% | -$665K |
|
2729
Twin Disc
TWIN
$326M
| $699K | ﹤0.01% |
+50,144
| New | +$542K |
|
2730
PUT
Spotify
SPOT
$111B
| $698K | ﹤0.01% |
+1,000
| New | +$699K |
|
2731
TD Synnex
SNX
$19.5B
| $696K | ﹤0.01% |
4,253
-199
| -4% | -$29.3K |
|
|
EFC
2732
Ellington Financial
EFC
$1.76B
| $696K | ﹤0.01% |
53,643
-47,570
| -47% | -$633K |
|
2733
Amneal Pharmaceuticals
AMRX
$6.19B
| $696K | ﹤0.01% |
69,534
+51,789
| +292% | +$465K |
|
2734
Intrepid Potash
IPI
$510M
| $696K | ﹤0.01% |
22,758
-10,620
| -32% | -$334K |
|
2735
Bankwell Financial Group
BWFG
$530M
| $695K | ﹤0.01% |
+15,703
| New | +$644K |
|
2736
Candel Therapeutics
CADL
$984M
| $694K | ﹤0.01% |
136,116
-233,079
| -63% | -$1.35M |
|
2737
VanEck Energy Income ETF
EINC
$79.6M
| $694K | ﹤0.01% |
+7,000
| New | +$676K |
|
2738
Alico
ALCO
$306M
| $693K | ﹤0.01% |
19,999
-7,700
| -28% | -$256K |
|
2739
Adicet Bio
ACET
$83.3M
| $692K | ﹤0.01% |
53,411
+21,361
| +67% | +$252K |
|
2740
CALL
Cleveland-Cliffs
CLF
$6.45B
| $689K | ﹤0.01% |
+56,500
| New | +$594K |
|
2741
Schwab Fundamental US Small Company Index ETF
FNDA
$9.2B
| $689K | ﹤0.01% |
+22,100
| New | +$671K |
|
2742
SiriusPoint
SPNT
$2.79B
| $687K | ﹤0.01% |
37,971
+3,117
| +9% | +$58.3K |
|
|
TMQ
2743
Trilogy Metals
TMQ
$650M
| $686K | ﹤0.01% |
326,721
+112,127
| +52% | +$200K |
|
2744
HBT Financial
HBT
$1.31B
| $686K | ﹤0.01% |
27,226
+7,783
| +40% | +$200K |
|
|
ABFL
2745
Abacus FCF Leaders ETF
ABFL
$535M
| $684K | ﹤0.01% |
9,500
+1,100
| +13% | +$77.4K |
|
2746
ClearBridge Large Cap Growth Select ETF
LRGE
$376M
| $683K | ﹤0.01% |
8,200
-2,400
| -23% | -$193K |
|
2747
LiveRamp
RAMP
$2.29B
| $683K | ﹤0.01% |
+25,158
| New | +$743K |
|
2748
CALL
Valero Energy
VLO
$99.6B
| $681K | ﹤0.01% |
+4,000
| New | +$597K |
|
2749
Inovio Pharmaceuticals
INO
$129M
| $680K | ﹤0.01% |
290,800
+218,073
| +300% | +$418K |
|
2750
CALL
Capital One
COF
$133B
| $680K | ﹤0.01% |
+3,200
| New | +$701K |
|
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.