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 | |
|---|---|---|---|---|---|---|
4001
PUT
argenx
ARGX
$65B
| $557K | ﹤0.01% |
+600
| New | +$495K |
|
4002
Geospace Technologies
GEOS
$71.3M
| $556K | ﹤0.01% |
82,184
+8,277
| +11% | +$71.3K |
|
4003
PUT
Dycom Industries
DY
$11.8B
| $556K | ﹤0.01% |
+1,100
| New | +$481K |
|
4004
ReposiTrak
TRAK
$145M
| $555K | ﹤0.01% |
61,636
-106,865
| -63% | -$977K |
|
4005
PUT
Group 1 Automotive
GPI
$3.12B
| $553K | ﹤0.01% |
+1,900
| New | +$623K |
|
|
SHAZ
4006
SharonAI Holdings
SHAZ
$2.11B
| $553K | ﹤0.01% |
+6,532
| New | +$369K |
|
4007
Eagle Bancorp Montana
EBMT
$182M
| $552K | ﹤0.01% |
+23,053
| New | +$517K |
|
4008
PUT
Textron
TXT
$14.3B
| $550K | ﹤0.01% |
+6,000
| New | +$545K |
|
4009
CALL
BJs Wholesale Club
BJ
$12.3B
| $549K | ﹤0.01% |
+6,300
| New | +$577K |
|
|
OKLO
4010
PUT
Oklo
OKLO
$7.83B
| $549K | ﹤0.01% |
10,500
-22,000
| -68% | -$1.37M |
|
4011
CALL
Teva Pharmaceuticals
TEVA
$43.5B
| $549K | ﹤0.01% |
+16,200
| New | +$540K |
|
4012
Outfront Media
OUT
$5.25B
| $548K | ﹤0.01% |
+16,742
| New | +$520K |
|
4013
Pricesmart
PSMT
$5.33B
| $547K | ﹤0.01% |
2,800
+200
| +8% | +$33.3K |
|
4014
Silicon Laboratories
SLAB
$7.27B
| $547K | ﹤0.01% |
2,501
+401
| +19% | +$86.7K |
|
4015
PUT
Sea Limited
SE
$72B
| $546K | ﹤0.01% |
5,700
+800
| +16% | +$70.3K |
|
4016
PUT
Darling Ingredients
DAR
$10.4B
| $546K | ﹤0.01% |
+10,000
| New | +$597K |
|
4017
Coursera
COUR
$1.59B
| $545K | ﹤0.01% |
96,672
-28,087
| -23% | -$160K |
|
4018
PUT
Mattel
MAT
$4.15B
| $543K | ﹤0.01% |
+39,100
| New | +$572K |
|
4019
Phibro Animal Health
PAHC
$1.47B
| $543K | ﹤0.01% |
17,283
-4,100
| -19% | -$173K |
|
4020
CALL
Capital One
COF
$134B
| $542K | ﹤0.01% |
2,700
-300
| -10% | -$57.4K |
|
4021
First Trust Horizon Managed Volatility Domestic ETF
HUSV
$84M
| $541K | ﹤0.01% |
13,771
-21,300
| -61% | -$832K |
|
4022
CALL
Fluor
FLR
$7.01B
| $540K | ﹤0.01% |
10,300
-3,100
| -23% | -$152K |
|
4023
PUT
Antero Midstream
AM
$10.5B
| $539K | ﹤0.01% |
+23,700
| New | +$515K |
|
4024
CALL
Royal Gold
RGLD
$21.9B
| $539K | ﹤0.01% |
+2,700
| New | +$628K |
|
4025
PUT
Commault Systems
CVLT
$5.55B
| $539K | ﹤0.01% |
+3,800
| New | +$408K |
|
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.