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 |
Intuit
INTU
|
+$753M |
| 2 |
Boston Scientific
BSX
|
+$540M |
| 3 |
Dow Inc
DOW
|
+$485M |
| 4 |
Wells Fargo
WFC
|
+$457M |
| 5 |
Goldman Sachs
GS
|
+$378M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$1.32B |
| 2 |
NVIDIA
NVDA
|
+$1.02B |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$787M |
| 4 |
SNDK
Sandisk
SNDK
|
+$744M |
| 5 |
Dell
DELL
|
+$688M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.71% |
| 2 | Financials | 15.22% |
| 3 | Healthcare | 11.94% |
| 4 | Industrials | 11.55% |
| 5 | Consumer Discretionary | 9.6% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2126
PUT
Intuitive Surgical
ISRG
$134B
| $4.73M | ﹤0.01% |
11,900
+6,800
| +133% | +$2.97M |
|
2127
Carlyle Secured Lending
CGBD
$781M
| $4.73M | ﹤0.01% |
448,847
-182,071
| -29% | -$2.03M |
|
|
GSHR
2128
Gesher Acquisition Corp II
GSHR
| $4.73M | ﹤0.01% |
453,124
| – | – |
|
|
CCAQ
2129
Collective Acquisition Corp
CCAQ
| $4.73M | ﹤0.01% |
453,124
| – | – |
|
|
MZYX
2130
MOZAYYX Acquisition Corp
MZYX
$373M
| $4.72M | ﹤0.01% |
+473,062
| New | +$4.69M |
|
|
AAC.U
2131
Ares Acquisition Corporation III Units
AAC.U
| $4.71M | ﹤0.01% |
+468,984
| New | +$4.71M |
|
2132
CALL
SLB Ltd
SLB
$79.9B
| $4.7M | ﹤0.01% |
101,200
-38,100
| -27% | -$2.04M |
|
|
ALOV
2133
Aldabra 4 Liquidity Opportunity Vehicle
ALOV
| $4.7M | ﹤0.01% |
473,062
| – | – |
|
2134
United Bankshares
UBSI
$6.51B
| $4.69M | ﹤0.01% |
+102,412
| New | +$4.48M |
|
2135
Old Second Bancorp
OSBC
$1.29B
| $4.68M | ﹤0.01% |
200,819
+133,462
| +198% | +$2.85M |
|
|
OACC
2136
Oaktree Acquisition Corp III Life Sciences
OACC
| $4.68M | ﹤0.01% |
437,500
| – | – |
|
2137
Alcoa
AA
$13.7B
| $4.68M | ﹤0.01% |
89,759
-98,543
| -52% | -$6.6M |
|
2138
Ciena
CIEN
$56B
| $4.66M | ﹤0.01% |
9,500
+6,014
| +173% | +$3.07M |
|
|
SVCO
2139
Silvaco Group
SVCO
$228M
| $4.65M | ﹤0.01% |
337,172
+295,239
| +704% | +$3.07M |
|
2140
First Business Financial Services
FBIZ
$575M
| $4.65M | ﹤0.01% |
73,566
+41,870
| +132% | +$2.42M |
|
|
RNA
2141
Atrium Therapeutics
RNA
$226M
| $4.65M | ﹤0.01% |
345,481
+166,921
| +93% | +$2.18M |
|
2142
Tompkins Financial
TMP
$1.41B
| $4.64M | ﹤0.01% |
49,109
+24,515
| +100% | +$2.11M |
|
2143
Paysign
PAYS
$796M
| $4.62M | ﹤0.01% |
564,238
+28,576
| +5% | +$189K |
|
2144
Clear Channel Outdoor Holdings
CCO
$1.21B
| $4.62M | ﹤0.01% |
1,907,187
-315,158
| -14% | -$755K |
|
2145
Leggett & Platt
LEG
$1.29B
| $4.58M | ﹤0.01% |
391,464
-1,587,907
| -80% | -$16.7M |
|
|
FVAV
2146
Fortress Value Acquisition Corp V
FVAV
$369M
| $4.58M | ﹤0.01% |
453,124
| – | – |
|
|
CALY
2147
Callaway Golf Company
CALY
$2.84B
| $4.58M | ﹤0.01% |
243,518
+181,718
| +294% | +$2.85M |
|
|
CAES
2148
Cantor Equity Partners VII
CAES
$322M
| $4.57M | ﹤0.01% |
+453,124
| New | +$4.57M |
|
2149
National Presto Industries
NPK
$1.07B
| $4.57M | ﹤0.01% |
36,552
+30,483
| +502% | +$4.13M |
|
2150
Toast
TOST
$21.2B
| $4.57M | ﹤0.01% |
164,179
-667,685
| -80% | -$17.4M |
|
Similar funds
John Overdeck's Q2 2026 Portfolio in Review
As of Q2 2026, John Overdeck held 5,589 positions worth $138B, up 11% from $124B the previous quarter. Its ten largest holdings account for 8.3% of the portfolio.
John Overdeck withdrew a net $4.38B in Q2 2026, closing 572 positions and reducing 1,756 holdings. Its most notable exit was State Street Technology Select Sector SPDR ETF, an estimated $172M position sold in full.
By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 19% a quarter earlier, followed by Financials and Healthcare.
Against the trend, John Overdeck opened a new position in Intuit worth $564M.
- John Overdeck's largest Q2 2026 buy was Intuit: 2,161,507 shares worth $564M.
- John Overdeck added most to Boston Scientific in Q2 2026, an estimated $540M increase.
- John Overdeck's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $1.32B.
- John Overdeck fully exited State Street Technology Select Sector SPDR ETF in Q2 2026, selling an estimated $172M.
- John Overdeck's ten largest holdings make up 8.3% of its $138B portfolio in Q2 2026.
- John Overdeck opened 1,050 new positions and closed 572 in Q2 2026.
- John Overdeck's portfolio value rose 11% quarter-over-quarter to $138B.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.