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 | |
|---|---|---|---|---|---|---|
3401
Grid Dynamics Holdings
GDYN
$649M
| $1.18M | ﹤0.01% |
+207,573
| New | +$1.28M |
|
|
POLE
3402
Andretti Acquisition Corp II
POLE
$320M
| $1.18M | ﹤0.01% |
109,581
-223,694
| -67% | -$2.4M |
|
3403
CALL
Diamondback Energy
FANG
$59B
| $1.18M | ﹤0.01% |
+6,700
| New | +$1.3M |
|
3404
Red Rock Resorts
RRR
$3.61B
| $1.18M | ﹤0.01% |
18,100
-11,600
| -39% | -$660K |
|
|
CCRN
3405
DELISTED
Cross Country Healthcare
CCRN
| $1.18M | ﹤0.01% |
89,060
+36,609
| +70% | +$434K |
|
3406
Scansource
SCSC
$1.1B
| $1.18M | ﹤0.01% |
22,575
-12,443
| -36% | -$545K |
|
|
SCPQ
3407
Social Commerce Partners
SCPQ
| $1.17M | ﹤0.01% |
117,704
| – | – |
|
3408
Fidelity Fundamental Small-Mid Cap ETF
FFSM
$1.59B
| $1.17M | ﹤0.01% |
+30,600
| New | +$1.09M |
|
3409
Noble Corp
NE
$7.39B
| $1.17M | ﹤0.01% |
31,317
+13,782
| +79% | +$659K |
|
3410
Hyatt Hotels
H
$17B
| $1.17M | ﹤0.01% |
6,025
-30,354
| -83% | -$5.32M |
|
|
EXE
3411
CALL
Expand Energy Corp
EXE
$22.2B
| $1.17M | ﹤0.01% |
12,800
+10,500
| +457% | +$997K |
|
3412
PUT
First Majestic Silver
AG
$10.4B
| $1.17M | ﹤0.01% |
+68,700
| New | +$1.36M |
|
3413
TIM SA
TIMB
$8.52B
| $1.16M | ﹤0.01% |
54,300
-1,900
| -3% | -$45.3K |
|
3414
PUT
Emcor
EME
$34.3B
| $1.16M | ﹤0.01% |
+1,400
| New | +$1.18M |
|
3415
Ingersoll Rand
IR
$31.2B
| $1.16M | ﹤0.01% |
14,114
-6,386
| -31% | -$494K |
|
3416
Monarch Casino & Resort
MCRI
$2.26B
| $1.16M | ﹤0.01% |
8,790
-2,245
| -20% | -$262K |
|
3417
Enliven Therapeutics
ELVN
$4.38B
| $1.15M | ﹤0.01% |
+22,758
| New | +$966K |
|
3418
CALL
Blackrock
BLK
$179B
| $1.15M | ﹤0.01% |
+1,200
| New | +$1.24M |
|
3419
Pediatrix Medical
MD
$2.16B
| $1.15M | ﹤0.01% |
45,472
-2,900
| -6% | -$66K |
|
3420
Procept Biorobotics
PRCT
$1.24B
| $1.15M | ﹤0.01% |
51,003
-177,508
| -78% | -$4.44M |
|
3421
Goldman Sachs Hedge Industry VIP ETF
GVIP
$570M
| $1.15M | ﹤0.01% |
+6,100
| New | +$1.05M |
|
3422
Power Integrations
POWI
$3.08B
| $1.15M | ﹤0.01% |
13,700
-9,100
| -40% | -$657K |
|
3423
PUT
Amkor Technology
AMKR
$12.5B
| $1.15M | ﹤0.01% |
13,300
+300
| +2% | +$21.4K |
|
3424
SiriusPoint
SPNT
$2.74B
| $1.15M | ﹤0.01% |
47,736
-4,047
| -8% | -$92.7K |
|
3425
Invesco S&P MidCap 400 GARP ETF
GRPM
$513M
| $1.15M | ﹤0.01% |
8,800
+1,400
| +19% | +$176K |
|
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.