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 | |
|---|---|---|---|---|---|---|
|
ATYR
3776
aTyr Pharma
ATYR
$49.2M
| $743K | ﹤0.01% |
1,245,147
+100,582
| +9% | +$65.7K |
|
3777
Walker & Dunlop
WD
$1.38B
| $741K | ﹤0.01% |
13,541
-299,941
| -96% | -$15.2M |
|
3778
RCM Technologies
RCMT
$291M
| $740K | ﹤0.01% |
26,228
+515
| +2% | +$13.8K |
|
3779
Fidelity Magellan ETF
FMAG
$246M
| $739K | ﹤0.01% |
20,100
-6,300
| -24% | -$224K |
|
3780
CALL
Centrus Energy
LEU
$3.72B
| $739K | ﹤0.01% |
4,400
-24,600
| -85% | -$4.6M |
|
3781
Zevia
ZVIA
$93.1M
| $737K | ﹤0.01% |
452,386
+313,886
| +227% | +$427K |
|
3782
PUT
Canadian Imperial Bank of Commerce
CM
$106B
| $736K | ﹤0.01% |
+6,400
| New | +$702K |
|
3783
PRA Group
PRAA
$737M
| $735K | ﹤0.01% |
38,726
+17,818
| +85% | +$317K |
|
|
NFGC
3784
New Found Gold
NFGC
$707M
| $733K | ﹤0.01% |
476,295
-950,938
| -67% | -$1.82M |
|
3785
GeneDx Holdings
WGS
$2.6B
| $733K | ﹤0.01% |
10,684
+237
| +2% | +$13.5K |
|
3786
CALL
Cal-Maine
CALM
$3.87B
| $733K | ﹤0.01% |
+9,100
| New | +$703K |
|
3787
Comstock Resources
CRK
$4.18B
| $733K | ﹤0.01% |
49,102
+24,362
| +98% | +$372K |
|
|
KLC
3788
KinderCare Learning Companies
KLC
$326M
| $732K | ﹤0.01% |
172,152
-26,857
| -13% | -$99.2K |
|
3789
PUT
General Mills
GIS
$21.4B
| $731K | ﹤0.01% |
+21,000
| New | +$725K |
|
3790
Invesco S&P MidCap Value with Momentum ETF
XMVM
$512M
| $730K | ﹤0.01% |
+10,300
| New | +$710K |
|
3791
First Western Financial
MYFW
$303M
| $730K | ﹤0.01% |
22,743
+10,907
| +92% | +$310K |
|
3792
The Beachbody Company
BODI
$46.4M
| $729K | ﹤0.01% |
71,347
+35,121
| +97% | +$403K |
|
3793
PUT
Dick's Sporting Goods
DKS
$16.4B
| $726K | ﹤0.01% |
3,200
-11,600
| -78% | -$2.56M |
|
3794
Viasat
VSAT
$10.3B
| $725K | ﹤0.01% |
8,069
-29,506
| -79% | -$1.95M |
|
3795
Resources Connection
RGP
$149M
| $725K | ﹤0.01% |
170,476
+75,898
| +80% | +$319K |
|
3796
Forward Air
FWRD
$612M
| $723K | ﹤0.01% |
+53,537
| New | +$798K |
|
3797
CALL
Darling Ingredients
DAR
$10.4B
| $721K | ﹤0.01% |
+13,200
| New | +$788K |
|
3798
Larimar Therapeutics
LRMR
$434M
| $720K | ﹤0.01% |
236,133
-239,479
| -50% | -$951K |
|
3799
CALL
Tapestry
TPR
$26B
| $717K | ﹤0.01% |
+4,900
| New | +$702K |
|
|
TWO
3800
Two Harbors Investment
TWO
$1.27B
| $715K | ﹤0.01% |
57,605
+35,005
| +155% | +$419K |
|
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.