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 | |
|---|---|---|---|---|---|---|
3651
CALL
Thermo Fisher Scientific
TMO
$233B
| $852K | ﹤0.01% |
+1,700
| New | +$816K |
|
|
XYZ
3652
CALL
Block Inc
XYZ
$49.4B
| $851K | ﹤0.01% |
11,200
+7,200
| +180% | +$506K |
|
|
XYZ
3653
PUT
Block Inc
XYZ
$49.4B
| $851K | ﹤0.01% |
+11,200
| New | +$787K |
|
3654
CALL
Stryker
SYK
$126B
| $850K | ﹤0.01% |
2,700
-400
| -13% | -$126K |
|
3655
Bausch + Lomb
BLCO
$6.16B
| $848K | ﹤0.01% |
51,200
+37,200
| +266% | +$592K |
|
3656
PUT
Synopsys
SNPS
$76.2B
| $848K | ﹤0.01% |
1,900
-2,000
| -51% | -$940K |
|
3657
CALL
Cenovus Energy
CVE
$60.7B
| $846K | ﹤0.01% |
+34,100
| New | +$941K |
|
3658
Spero Therapeutics
SPRO
$71M
| $846K | ﹤0.01% |
382,814
-502,817
| -57% | -$1.32M |
|
3659
Installed Building Products
IBP
$6.56B
| $846K | ﹤0.01% |
3,680
-21,800
| -86% | -$5.3M |
|
3660
CALL
Toast
TOST
$21.2B
| $846K | ﹤0.01% |
30,400
+20,400
| +204% | +$532K |
|
3661
Matthews International
MATW
$664M
| $845K | ﹤0.01% |
31,379
+6,024
| +24% | +$162K |
|
3662
PUT
Keurig Dr Pepper
KDP
$43.6B
| $844K | ﹤0.01% |
25,800
+16,600
| +180% | +$484K |
|
3663
PUT
Suncor Energy
SU
$80B
| $843K | ﹤0.01% |
+15,700
| New | +$994K |
|
|
DFDV
3664
DeFi Development Corp
DFDV
$122M
| $840K | ﹤0.01% |
285,815
+15
| +0% | +$57 |
|
|
VBNK
3665
VersaBank
VBNK
$638M
| $840K | ﹤0.01% |
+36,188
| New | +$653K |
|
3666
PUT
PayPal
PYPL
$52.7B
| $838K | ﹤0.01% |
19,400
-73,300
| -79% | -$3.33M |
|
3667
SAB Biotherapeutics
SABS
$344M
| $837K | ﹤0.01% |
214,632
+33,447
| +18% | +$124K |
|
3668
Adicet Bio
ACET
$86M
| $837K | ﹤0.01% |
96,839
+53,733
| +125% | +$423K |
|
3669
Donnelley Financial Solutions
DFIN
$1.19B
| $836K | ﹤0.01% |
19,925
-23,669
| -54% | -$1.03M |
|
3670
PUT
Deckers Outdoor
DECK
$12.5B
| $834K | ﹤0.01% |
8,400
-4,800
| -36% | -$505K |
|
3671
PUT
Onto Innovation
ONTO
$17.9B
| $833K | ﹤0.01% |
2,200
+1,100
| +100% | +$311K |
|
|
EOS
3672
Eaton Vance Enhance Equity Income Fund II
EOS
$1.14B
| $831K | ﹤0.01% |
37,718
| – | – |
|
3673
GE HealthCare
GEHC
$33.8B
| $831K | ﹤0.01% |
+12,977
| New | +$853K |
|
3674
PUT
Emerson Electric
EMR
$87.7B
| $830K | ﹤0.01% |
5,800
-4,000
| -41% | -$563K |
|
3675
PUT
Dover
DOV
$27.2B
| $830K | ﹤0.01% |
+3,700
| New | +$806K |
|
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.