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 | |
|---|---|---|---|---|---|---|
3301
Waterstone Financial
WSBF
$379M
| $1.34M | ﹤0.01% |
64,549
-21,376
| -25% | -$399K |
|
3302
CALL
Guardant Health
GH
$22.9B
| $1.34M | ﹤0.01% |
+8,900
| New | +$968K |
|
3303
CALL
Target
TGT
$75.1B
| $1.33M | ﹤0.01% |
10,200
-34,700
| -77% | -$4.41M |
|
3304
PUT
TransDigm Group
TDG
$66.4B
| $1.33M | ﹤0.01% |
+1,000
| New | +$1.23M |
|
3305
PUT
Occidental Petroleum
OXY
$61.3B
| $1.33M | ﹤0.01% |
27,400
-5,600
| -17% | -$318K |
|
|
SLN
3306
Silence Therapeutics
SLN
$825M
| $1.33M | ﹤0.01% |
121,004
+104,801
| +647% | +$737K |
|
3307
PUT
Tractor Supply
TSCO
$18.2B
| $1.33M | ﹤0.01% |
42,000
+30,500
| +265% | +$1.05M |
|
3308
CALL
Semtech
SMTC
$11.6B
| $1.33M | ﹤0.01% |
+8,200
| New | +$1.07M |
|
3309
Criteo S.A.
CRTO
$855M
| $1.33M | ﹤0.01% |
72,592
+6,718
| +10% | +$121K |
|
3310
CALL
Restaurant Brands International
QSR
$28.2B
| $1.33M | ﹤0.01% |
+18,300
| New | +$1.39M |
|
3311
PUT
Zscaler
ZS
$29.4B
| $1.33M | ﹤0.01% |
9,400
+4,400
| +88% | +$613K |
|
3312
American Well
AMWL
$202M
| $1.32M | ﹤0.01% |
145,104
+12,095
| +9% | +$90.3K |
|
|
3313
PUT
Boston Scientific
BSX
$73B
| $1.32M | ﹤0.01% |
31,000
+26,000
| +520% | +$1.41M |
|
3314
CALL
Dutch Bros
BROS
$6.88B
| $1.32M | ﹤0.01% |
18,400
+5,900
| +47% | +$339K |
|
3315
LKQ Corp
LKQ
$6.52B
| $1.32M | ﹤0.01% |
50,100
+20,400
| +69% | +$567K |
|
3316
PUT
Generac Holdings
GNRC
$12.2B
| $1.32M | ﹤0.01% |
4,500
+2,500
| +125% | +$626K |
|
3317
PUT
Howmet Aerospace
HWM
$108B
| $1.32M | ﹤0.01% |
+4,900
| New | +$1.26M |
|
3318
Leonardo DRS
DRS
$10.9B
| $1.31M | ﹤0.01% |
+30,775
| New | +$1.37M |
|
|
MTAL
3319
Metals Acquisition Corp II
MTAL
$313M
| $1.31M | ﹤0.01% |
+129,038
| New | +$1.31M |
|
3320
Janus International
JBI
$697M
| $1.31M | ﹤0.01% |
235,904
+156,104
| +196% | +$819K |
|
|
GRMN
3321
PUT
Garmin
GRMN
$56.9B
| $1.31M | ﹤0.01% |
+5,500
| New | +$1.34M |
|
3322
Fresenius Medical Care
FMS
$12.5B
| $1.3M | ﹤0.01% |
57,673
-156,701
| -73% | -$3.52M |
|
3323
SIGA Technologies
SIGA
$218M
| $1.3M | ﹤0.01% |
357,715
-75,946
| -18% | -$340K |
|
3324
PUT
Intuitive Machines
LUNR
$2.94B
| $1.3M | ﹤0.01% |
+60,800
| New | +$1.71M |
|
3325
Ormat Technologies
ORA
$6.67B
| $1.3M | ﹤0.01% |
+11,905
| New | +$1.48M |
|
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.