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 | |
|---|---|---|---|---|---|---|
2001
CALL
Walt Disney
DIS
$186B
| $5.41M | ﹤0.01% |
56,200
+7,200
| +15% | +$734K |
|
|
WSR
2002
DELISTED
Whitestone REIT
WSR
| $5.41M | ﹤0.01% |
285,126
-52,469
| -16% | -$986K |
|
|
VSXY
2003
Victoria's Secret
VSXY
$6.79B
| $5.4M | ﹤0.01% |
64,694
+59,392
| +1,120% | +$3.56M |
|
2004
Navios Maritime Partners
NMM
$2.52B
| $5.4M | ﹤0.01% |
77,072
+6,251
| +9% | +$447K |
|
|
KOYN
2005
CSLM Digital Asset Acquisition Corp III
KOYN
| $5.4M | ﹤0.01% |
532,249
| – | – |
|
2006
PUT
Snowflake
SNOW
$115B
| $5.4M | ﹤0.01% |
21,200
-1,800
| -8% | -$331K |
|
2007
Alamo Group
ALG
$2B
| $5.39M | ﹤0.01% |
32,781
+18,194
| +125% | +$2.94M |
|
2008
Entravision Communication
EVC
$745M
| $5.38M | ﹤0.01% |
412,441
+44,854
| +12% | +$318K |
|
2009
Winnebago Industries
WGO
$898M
| $5.37M | ﹤0.01% |
172,003
-18,316
| -10% | -$559K |
|
2010
Global X SuperDividend US ETF
DIV
$790M
| $5.37M | ﹤0.01% |
281,800
-103,000
| -27% | -$1.97M |
|
|
LPBB
2011
Launch Two Acquisition Corp
LPBB
| $5.36M | ﹤0.01% |
500,000
| – | – |
|
2012
Weyerhaeuser
WY
$17.6B
| $5.35M | ﹤0.01% |
223,657
+37,137
| +20% | +$902K |
|
2013
Acadia Healthcare
ACHC
$2.59B
| $5.35M | ﹤0.01% |
181,274
-29,942
| -14% | -$769K |
|
|
ALDF
2014
Aldel Financial II Inc
ALDF
$322M
| $5.34M | ﹤0.01% |
500,000
| – | – |
|
2015
Ball Corp
BALL
$16.8B
| $5.33M | ﹤0.01% |
85,454
-21,900
| -20% | -$1.29M |
|
2016
Aquestive Therapeutics
AQST
$585M
| $5.33M | ﹤0.01% |
1,281,227
+141,823
| +12% | +$597K |
|
2017
ANI Pharmaceuticals
ANIP
$1.73B
| $5.32M | ﹤0.01% |
64,232
-32,577
| -34% | -$2.61M |
|
2018
Provident Financial Services
PFS
$3.09B
| $5.31M | ﹤0.01% |
224,644
-294,383
| -57% | -$6.61M |
|
2019
Federated Hermes
FHI
$4.76B
| $5.31M | ﹤0.01% |
96,168
-347,694
| -78% | -$19.7M |
|
2020
Perspective Therapeutics
CATX
$377M
| $5.31M | ﹤0.01% |
1,556,451
+552,977
| +55% | +$2.09M |
|
2021
Alaska Air
ALK
$4.51B
| $5.3M | ﹤0.01% |
101,628
-32,270
| -24% | -$1.38M |
|
2022
Kelly Services Class A
KELYA
$594M
| $5.3M | ﹤0.01% |
431,850
-112,915
| -21% | -$1.18M |
|
2023
PUT
ServiceNow
NOW
$133B
| $5.3M | ﹤0.01% |
53,400
+17,400
| +48% | +$1.72M |
|
2024
Nkarta
NKTX
$191M
| $5.3M | ﹤0.01% |
1,873,293
-174,083
| -9% | -$490K |
|
2025
Simpson Manufacturing
SSD
$7.74B
| $5.3M | ﹤0.01% |
25,312
+1,789
| +8% | +$335K |
|
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.