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John Overdeck Two Sigma Investments
AUM
$138B
Turnover
29.02%
1-Year Est. Return
41.87%
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.
This Fund
S&P 500
This Quarter Est. Return
+21.14%
1 Year Est. Return
+41.87%
3 Year Est. Return
+122.61%
5 Year Est. Return
+129.48%
10 Year Est. Return
+649.67%
AUM
$138B
AUM Growth
+$14.2B
(+11%)
Cap. Flow
-$5.38B
Cap. Flow % of AUM
Cap. Flow %
-3.9%
Top 10 Holdings %
Top 10 Hldgs %
8.28%
Holding
5,589
New
1,050
Increased
1,919
Reduced
1,756
Closed
572
Avg Time Held
Equity + Options
1.4
years
Top 10 Avg Time Held
Equity + Options
0.2
years
Top 20 Avg Time Held
Equity + Options
0.2
years
Avg Time Held Equity only
1.7
years
Top 10 Avg Time Held Equity only
0.2
years
Top 20 Avg Time Held Equity only
0.2
years
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 |
Sandisk
SNDK
|
+$744M |
| 5 |
Dell
DELL
|
+$688M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.7% |
| 2 | Financials | 15.22% |
| 3 | Miscellaneous | 12.05% |
| 4 | Healthcare | 11.94% |
| 5 | Industrials | 11.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
3651
CALL
Thermo Fisher Scientific
TMO
$254B
| $852K | ﹤0.01% |
+1,700
| New | +$816K |
2026 Q2
0 quarters
|
|
3652
CALL
Block Inc
XYZ
$46.9B
| $851K | ﹤0.01% |
11,200
+7,200
| +180% | +$506K |
2026 Q1
1 quarter
|
|
|
3653
PUT
Block Inc
XYZ
$46.9B
| $851K | ﹤0.01% |
+11,200
| New | +$787K |
2026 Q2
0 quarters
|
|
3654
CALL
Stryker
SYK
$117B
| $850K | ﹤0.01% |
2,700
-400
| -13% | -$126K |
2026 Q1
1 quarter
|
|
3655
Bausch + Lomb
BLCO
$6.05B
| $848K | ﹤0.01% |
51,200
+37,200
| +266% | +$592K |
2026 Q1
1 quarter
|
|
3656
PUT
Synopsys
SNPS
$85.8B
| $848K | ﹤0.01% |
1,900
-2,000
| -51% | -$940K |
2025 Q4
2 quarters
|
|
3657
CALL
Cenovus Energy
CVE
$61.2B
| $846K | ﹤0.01% |
+34,100
| New | +$941K |
2026 Q2
0 quarters
|
|
3658
Spero Therapeutics
SPRO
$71M
| $846K | ﹤0.01% |
382,814
-502,817
| -57% | -$1.32M |
2025 Q3
3 quarters
|
|
3659
Installed Building Products
IBP
$5.03B
| $846K | ﹤0.01% |
3,680
-21,800
| -86% | -$5.3M |
2023 Q3
11 quarters
|
|
3660
CALL
Toast
TOST
$18.9B
| $846K | ﹤0.01% |
30,400
+20,400
| +204% | +$532K |
2026 Q1
1 quarter
|
|
3661
Matthews International
MATW
$606M
| $845K | ﹤0.01% |
31,379
+6,024
| +24% | +$162K |
2022 Q4
14 quarters
|
|
3662
PUT
Keurig Dr Pepper
KDP
$47.1B
| $844K | ﹤0.01% |
25,800
+16,600
| +180% | +$484K |
2026 Q1
1 quarter
|
|
3663
PUT
Suncor Energy
SU
$91.7B
| $843K | ﹤0.01% |
+15,700
| New | +$994K |
2026 Q2
0 quarters
|
|
3664
DeFi Development Corp
DFDV
$126M
| $840K | ﹤0.01% |
285,815
+15
| +0% | +$57 |
2025 Q4
2 quarters
|
|
3665
VersaBank
VBNK
$735M
| $840K | ﹤0.01% |
+36,188
| New | +$653K |
2026 Q2
0 quarters
|
|
3666
PUT
PayPal
PYPL
$48.9B
| $838K | ﹤0.01% |
19,400
-73,300
| -79% | -$3.33M |
2025 Q4
2 quarters
|
|
3667
SAB Biotherapeutics
SABS
$262M
| $837K | ﹤0.01% |
214,632
+33,447
| +18% | +$124K |
2026 Q1
1 quarter
|
|
3668
Adicet Bio
ACET
$42.3M
| $837K | ﹤0.01% |
96,839
+53,733
| +125% | +$423K |
2023 Q2
12 quarters
|
|
3669
Donnelley Financial Solutions
DFIN
$1.29B
| $836K | ﹤0.01% |
19,925
-23,669
| -54% | -$1.03M |
2023 Q1
13 quarters
|
|
3670
PUT
Deckers Outdoor
DECK
$11.9B
| $834K | ﹤0.01% |
8,400
-4,800
| -36% | -$505K |
2025 Q3
3 quarters
|
|
3671
PUT
Onto Innovation
ONTO
$10.8B
| $833K | ﹤0.01% |
2,200
+1,100
| +100% | +$311K |
2026 Q1
1 quarter
|
|
3672
Eaton Vance Enhance Equity Income Fund II
EOS
$1.11B
| $831K | ﹤0.01% |
37,718
| – | – |
2025 Q4
2 quarters
|
|
3673
GE HealthCare
GEHC
$31.7B
| $831K | ﹤0.01% |
+12,977
| New | +$853K |
2026 Q2
0 quarters
|
|
3674
PUT
Emerson Electric
EMR
$89.5B
| $830K | ﹤0.01% |
5,800
-4,000
| -41% | -$563K |
2025 Q4
2 quarters
|
|
3675
PUT
Dover
DOV
$26.6B
| $830K | ﹤0.01% |
+3,700
| New | +$806K |
2026 Q2
0 quarters
|
|
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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 $5.38B 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 Miscellaneous.
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.