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 | |
|---|---|---|---|---|---|---|
3201
Relmada Therapeutics
RLMD
$494M
| $1.49M | ﹤0.01% |
214,915
-193,180
| -47% | -$1.35M |
|
3202
PUT
Cameco
CCJ
$44.6B
| $1.49M | ﹤0.01% |
14,600
-4,200
| -22% | -$471K |
|
|
USAR
3203
CALL
USA Rare Earth Inc
USAR
$4.71B
| $1.48M | ﹤0.01% |
68,800
-41,400
| -38% | -$944K |
|
3204
Red Robin
RRGB
$189M
| $1.48M | ﹤0.01% |
+185,113
| New | +$822K |
|
3205
Western Union
WU
$2.28B
| $1.48M | ﹤0.01% |
191,930
-4,827,036
| -96% | -$40.5M |
|
|
ETV
3206
Eaton Vance Tax-Managed Buy-Write Opportunities Fund
ETV
$1.76B
| $1.48M | ﹤0.01% |
99,309
| – | – |
|
3207
Galectin Therapeutics
GALT
$371M
| $1.48M | ﹤0.01% |
318,245
-148,818
| -32% | -$386K |
|
3208
CALL
Alcoa
AA
$13.7B
| $1.48M | ﹤0.01% |
28,300
-6,800
| -19% | -$455K |
|
3209
CALL
Kinder Morgan
KMI
$69B
| $1.47M | ﹤0.01% |
46,100
-13,900
| -23% | -$448K |
|
3210
Chord Energy
CHRD
$8.09B
| $1.47M | ﹤0.01% |
+12,892
| New | +$1.75M |
|
3211
MidCap Financial Investment
MFIC
$804M
| $1.47M | ﹤0.01% |
146,152
-102,369
| -41% | -$1.12M |
|
3212
PUT
Semtech
SMTC
$11.6B
| $1.47M | ﹤0.01% |
+9,100
| New | +$1.19M |
|
3213
State Street SPDR Dow Jones REIT ETF
RWR
$1.89B
| $1.47M | ﹤0.01% |
13,000
-322,900
| -96% | -$35.4M |
|
3214
Ascent Industries
ACNT
$133M
| $1.47M | ﹤0.01% |
97,695
-34,798
| -26% | -$486K |
|
3215
Vanguard US Quality Factor ETF
VFQY
$503M
| $1.46M | ﹤0.01% |
8,600
-6,700
| -44% | -$1.08M |
|
3216
LivaNova
LIVN
$4.34B
| $1.46M | ﹤0.01% |
17,805
-29,922
| -63% | -$2.12M |
|
3217
CALL
Molina Healthcare
MOH
$10.5B
| $1.46M | ﹤0.01% |
6,400
-800
| -11% | -$145K |
|
|
EPRX
3218
Eupraxia Pharmaceuticals
EPRX
$444M
| $1.46M | ﹤0.01% |
221,084
+210,284
| +1,947% | +$1.45M |
|
3219
MakeMyTrip
MMYT
$5.69B
| $1.46M | ﹤0.01% |
27,400
-3,800
| -12% | -$173K |
|
|
STRZ
3220
Starz Entertainment Corp
STRZ
$470M
| $1.46M | ﹤0.01% |
+50,592
| New | +$1.1M |
|
3221
Casella Waste Systems
CWST
$5.86B
| $1.46M | ﹤0.01% |
15,052
+2,481
| +20% | +$212K |
|
3222
PUT
ATI
ATI
$28.2B
| $1.46M | ﹤0.01% |
7,400
+4,000
| +118% | +$678K |
|
3223
Steel Dynamics
STLD
$32.8B
| $1.46M | ﹤0.01% |
+6,355
| New | +$1.49M |
|
3224
Cogent Biosciences
COGT
$6.37B
| $1.46M | ﹤0.01% |
37,637
-15,453
| -29% | -$541K |
|
3225
PUT
Thermo Fisher Scientific
TMO
$233B
| $1.45M | ﹤0.01% |
+2,900
| New | +$1.39M |
|
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.