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 | |
|---|---|---|---|---|---|---|
1
Amazon
AMZN
$2.79T
| $1.36B | 0.99% |
5,716,287
-618,880
| -10% | -$155M |
|
|
2
NVIDIA
NVDA
$5.2T
| $1.26B | 0.91% |
6,284,574
-4,949,671
| -44% | -$1.02B |
|
3
Apple
AAPL
$4.51T
| $1.21B | 0.88% |
4,176,413
-1,768,030
| -30% | -$506M |
|
4
Tesla
TSLA
$1.43T
| $1.2B | 0.87% |
2,861,596
-51,303
| -2% | -$20.4M |
|
5
Berkshire Hathaway Class B
BRK.B
$1.06T
| $1.14B | 0.82% |
2,274,395
+652,805
| +40% | +$314M |
|
6
JPMorgan Chase
JPM
$935B
| $968M | 0.7% |
2,957,516
-353,372
| -11% | -$110M |
|
7
Mastercard
MA
$509B
| $946M | 0.68% |
1,841,139
+166,041
| +10% | +$82.8M |
|
8
Costco
COST
$420B
| $941M | 0.68% |
1,006,231
+131,438
| +15% | +$131M |
|
9
ASML
ASML
$677B
| $918M | 0.66% |
461,505
+82,555
| +22% | +$131M |
|
10
Advanced Micro Devices
AMD
$773B
| $880M | 0.64% |
1,515,419
+143,415
| +10% | +$58.8M |
|
11
Citigroup
C
$221B
| $831M | 0.6% |
5,938,026
+1,636,159
| +38% | +$213M |
|
|
12
Boston Scientific
BSX
$73B
| $826M | 0.6% |
19,359,023
+9,947,792
| +106% | +$540M |
|
|
13
Alphabet (Google) Class A
GOOGL
$4.22T
| $803M | 0.58% |
2,246,651
-2,184,977
| -49% | -$787M |
|
14
Lockheed Martin
LMT
$130B
| $800M | 0.58% |
1,569,836
+220,664
| +16% | +$119M |
|
15
Intuitive Surgical
ISRG
$134B
| $787M | 0.57% |
1,979,128
+573,794
| +41% | +$251M |
|
|
SCHW
16
Charles Schwab
SCHW
$194B
| $777M | 0.56% |
8,425,755
+3,065,456
| +57% | +$280M |
|
17
Kimberly-Clark
KMB
$36.4B
| $774M | 0.56% |
7,054,632
+1,879,906
| +36% | +$186M |
|
|
18
Goldman Sachs
GS
$303B
| $762M | 0.55% |
753,545
+387,817
| +106% | +$378M |
|
19
TJX Companies
TJX
$155B
| $756M | 0.55% |
4,990,475
-252,793
| -5% | -$40M |
|
20
T-Mobile US
TMUS
$196B
| $745M | 0.54% |
4,443,802
+552,334
| +14% | +$105M |
|
21
Abbott
ABT
$202B
| $737M | 0.53% |
8,126,315
+1,737,487
| +27% | +$159M |
|
22
Roblox
RBLX
$27.4B
| $731M | 0.53% |
13,448,649
+1,404,681
| +12% | +$69.9M |
|
23
Interactive Brokers
IBKR
$42.5B
| $726M | 0.53% |
8,340,400
+27,429
| +0.3% | +$2.28M |
|
24
Morgan Stanley
MS
$336B
| $716M | 0.52% |
3,423,546
-316,066
| -8% | -$62.6M |
|
25
Microsoft
MSFT
$3.59T
| $682M | 0.49% |
1,829,283
+448,446
| +32% | +$181M |
|
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.