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 | |
|---|---|---|---|---|---|---|
26
Progressive
PGR
$127B
| $662M | 0.48% |
3,030,604
-497,204
| -14% | -$100M |
|
27
Cloudflare
NET
$104B
| $634M | 0.46% |
2,586,183
-233,654
| -8% | -$51.1M |
|
28
Chipotle Mexican Grill
CMG
$46.7B
| $629M | 0.46% |
18,486,484
+10,271,077
| +125% | +$336M |
|
|
29
Micron Technology
MU
$1.09T
| $618M | 0.45% |
535,173
-1,755,271
| -77% | -$1.32B |
|
30
Bloom Energy
BE
$59.3B
| $610M | 0.44% |
2,016,532
-1,531,306
| -43% | -$392M |
|
31
Equinix
EQIX
$105B
| $601M | 0.44% |
576,841
+124,574
| +28% | +$133M |
|
|
32
Wells Fargo
WFC
$254B
| $600M | 0.43% |
7,266,171
+5,682,984
| +359% | +$457M |
|
33
RTX Corp
RTX
$283B
| $590M | 0.43% |
3,108,337
+1,152,154
| +59% | +$211M |
|
34
Illinois Tool Works
ITW
$80.4B
| $583M | 0.42% |
2,153,740
+685,665
| +47% | +$178M |
|
35
Bristol-Myers Squibb
BMY
$137B
| $581M | 0.42% |
10,085,383
-1,449,723
| -13% | -$83.2M |
|
36
Alnylam Pharmaceuticals
ALNY
$31.6B
| $565M | 0.41% |
1,875,937
-116,640
| -6% | -$35.2M |
|
|
37
Intuit
INTU
$100B
| $564M | 0.41% |
+2,161,507
| New | +$753M |
|
38
Guardant Health
GH
$22.9B
| $558M | 0.4% |
3,719,301
-510,230
| -12% | -$55.5M |
|
|
SNDK
39
Sandisk
SNDK
$234B
| $550M | 0.4% |
241,675
-521,051
| -68% | -$744M |
|
|
WCN
40
Waste Connections
WCN
$42.6B
| $541M | 0.39% |
3,245,893
-198,159
| -6% | -$31.4M |
|
41
CME Group
CME
$98.9B
| $534M | 0.39% |
2,420,121
+1,268,663
| +110% | +$351M |
|
42
Ross Stores
ROST
$76.7B
| $521M | 0.38% |
2,446,237
-366,053
| -13% | -$82.4M |
|
43
Airbnb
ABNB
$110B
| $508M | 0.37% |
3,550,165
+91,394
| +3% | +$12.5M |
|
44
Moderna
MRNA
$57.9B
| $504M | 0.36% |
7,193,530
-1,892,874
| -21% | -$97.9M |
|
45
Cigna
CI
$73.3B
| $500M | 0.36% |
1,813,110
+1,171,762
| +183% | +$331M |
|
46
Ionis Pharmaceuticals
IONS
$9.93B
| $496M | 0.36% |
6,252,342
+394,713
| +7% | +$29.7M |
|
47
AerCap
AER
$23B
| $495M | 0.36% |
3,394,989
-140,610
| -4% | -$20M |
|
48
American Airlines Group
AAL
$9.15B
| $492M | 0.36% |
27,240,983
+13,060,865
| +92% | +$175M |
|
|
49
Dow Inc
DOW
$23.4B
| $489M | 0.35% |
17,873,366
+13,367,989
| +297% | +$485M |
|
50
Republic Services
RSG
$67.6B
| $486M | 0.35% |
2,280,285
+571,170
| +33% | +$119M |
|
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.