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 | |
|---|---|---|---|---|---|---|
2351
Fidus Investment
FDUS
$748M
| $3.72M | ﹤0.01% |
194,900
-78,809
| -29% | -$1.46M |
|
|
VACI
2352
Viking Acquisition Corp I
VACI
$321M
| $3.7M | ﹤0.01% |
362,500
| – | – |
|
2353
Anika Therapeutics
ANIK
$291M
| $3.7M | ﹤0.01% |
252,964
+16,844
| +7% | +$250K |
|
|
TEM
2354
Tempus AI
TEM
$13.1B
| $3.7M | ﹤0.01% |
63,864
-735,534
| -92% | -$36.9M |
|
|
SAAQ
2355
Space Asset Acquisition Corp
SAAQ
| $3.7M | ﹤0.01% |
362,500
| – | – |
|
2356
Liquidity Services
LQDT
$1.36B
| $3.69M | ﹤0.01% |
94,383
-27,047
| -22% | -$957K |
|
|
SVIV
2357
Spring Valley Acquisition Corp IV
SVIV
| $3.69M | ﹤0.01% |
362,500
| – | – |
|
2358
Builders FirstSource
BLDR
$7.55B
| $3.69M | ﹤0.01% |
41,224
+34,647
| +527% | +$2.77M |
|
2359
Tilly's
TLYS
$120M
| $3.69M | ﹤0.01% |
877,537
+67,028
| +8% | +$303K |
|
2360
Gildan
GIL
$10.4B
| $3.67M | ﹤0.01% |
71,218
-2,200
| -3% | -$126K |
|
|
CBK
2361
Commercial Bancgroup
CBK
$463M
| $3.67M | ﹤0.01% |
113,783
+4,049
| +4% | +$119K |
|
2362
CALL
DoorDash
DASH
$96.8B
| $3.67M | ﹤0.01% |
19,900
-4,400
| -18% | -$727K |
|
|
FTRA.U
2363
FutureCorp Space Acquisition 1 Units
FTRA.U
| $3.67M | ﹤0.01% |
+362,500
| New | +$3.68M |
|
2364
PUT
Visa
V
$693B
| $3.67M | ﹤0.01% |
+10,700
| New | +$3.44M |
|
2365
Abercrombie & Fitch
ANF
$4.84B
| $3.67M | ﹤0.01% |
40,736
+1,911
| +5% | +$162K |
|
|
RNGT
2366
Range Capital Acquisition Corp II
RNGT
$318M
| $3.66M | ﹤0.01% |
362,500
| – | – |
|
|
HSLV
2367
Highlander Silver Corp
HSLV
$1.08B
| $3.66M | ﹤0.01% |
+786,441
| New | +$4.36M |
|
|
SVAQ
2368
Silicon Valley Acquisition Corp
SVAQ
$295M
| $3.66M | ﹤0.01% |
362,500
| – | – |
|
2369
Walt Disney
DIS
$186B
| $3.65M | ﹤0.01% |
37,896
-23,499
| -38% | -$2.4M |
|
|
SAC
2370
Safeguard Acquisition Corp
SAC
$317M
| $3.65M | ﹤0.01% |
362,500
| – | – |
|
2371
Bristow Group
VTOL
$1.34B
| $3.64M | ﹤0.01% |
88,198
-58,406
| -40% | -$2.62M |
|
|
IRHO
2372
Iron Horse Acquisitions Corp II
IRHO
$294M
| $3.64M | ﹤0.01% |
362,500
| – | – |
|
|
ADAC
2373
American Drive Acquisition Co
ADAC
$290M
| $3.63M | ﹤0.01% |
362,500
| – | – |
|
|
STLN
2374
Starling Oncology
STLN
$658M
| $3.63M | ﹤0.01% |
668,839
+361,085
| +117% | +$1.52M |
|
2375
CALL
Applied Optoelectronics
AAOI
$10.6B
| $3.63M | ﹤0.01% |
+24,500
| New | +$3.98M |
|
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.