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 | |
|---|---|---|---|---|---|---|
1801
CALL
JPMorgan Chase
JPM
$935B
| $6.64M | ﹤0.01% |
20,300
-89,200
| -81% | -$27.7M |
|
1802
PUT
Lam Research
LRCX
$393B
| $6.63M | ﹤0.01% |
15,300
+13,900
| +993% | +$4.22M |
|
1803
PUT
Coherent
COHR
$56.7B
| $6.63M | ﹤0.01% |
16,800
+13,200
| +367% | +$4.67M |
|
1804
Global X MLP & Energy Infrastructure ETF
MLPX
$3.57B
| $6.62M | ﹤0.01% |
89,900
-385,500
| -81% | -$28.3M |
|
|
SZZL
1805
Sizzle Acquisition Corp II
SZZL
$327M
| $6.62M | ﹤0.01% |
639,026
| – | – |
|
1806
Century Therapeutics
IPSC
$375M
| $6.61M | ﹤0.01% |
2,699,013
+327,583
| +14% | +$748K |
|
1807
Oppenheimer Holdings
OPY
$1.24B
| $6.61M | ﹤0.01% |
62,606
+21,975
| +54% | +$2.24M |
|
1808
Biohaven
BHVN
$2.09B
| $6.6M | ﹤0.01% |
443,775
-742,939
| -63% | -$8M |
|
|
LAND
1809
Gladstone Land Corp
LAND
$373M
| $6.59M | ﹤0.01% |
772,452
-717,898
| -48% | -$6.86M |
|
1810
Phinia Inc
PHIN
$2.67B
| $6.58M | ﹤0.01% |
79,857
-43,443
| -35% | -$3.33M |
|
1811
PUT
Cloudflare
NET
$104B
| $6.57M | ﹤0.01% |
26,800
+15,800
| +144% | +$3.46M |
|
1812
Algonquin Power & Utilities
AQN
$4.39B
| $6.57M | ﹤0.01% |
1,120,966
+857,427
| +325% | +$5.21M |
|
1813
American Coastal Insurance
ACIC
$434M
| $6.57M | ﹤0.01% |
591,554
+26,800
| +5% | +$296K |
|
1814
PUT
Corning
GLW
$129B
| $6.56M | ﹤0.01% |
25,700
+16,700
| +186% | +$3.04M |
|
1815
First Financial Corp
THFF
$940M
| $6.56M | ﹤0.01% |
84,744
+36,979
| +77% | +$2.55M |
|
|
AXIN
1816
Axiom Intelligence Acquisition Corp 1
AXIN
$281M
| $6.56M | ﹤0.01% |
634,375
| – | – |
|
1817
Napco Security Technologies
NSSC
$1.36B
| $6.56M | ﹤0.01% |
172,667
+86,467
| +100% | +$3.43M |
|
1818
iShares Russell 2000 Growth ETF
IWO
$14.8B
| $6.55M | ﹤0.01% |
+16,622
| New | +$6.07M |
|
|
TVAI
1819
Thayer Ventures Acquisition Corporation II
TVAI
$282M
| $6.55M | ﹤0.01% |
634,375
| – | – |
|
1820
West Pharmaceutical
WST
$24.8B
| $6.54M | ﹤0.01% |
18,227
-207,404
| -92% | -$63.4M |
|
1821
Oric Pharmaceuticals
ORIC
$1.47B
| $6.54M | ﹤0.01% |
+603,664
| New | +$5.47M |
|
1822
Paychex
PAYX
$44.3B
| $6.53M | ﹤0.01% |
66,401
+16,619
| +33% | +$1.57M |
|
1823
CALL
Credo Technology Group
CRDO
$43B
| $6.53M | ﹤0.01% |
24,000
-21,200
| -47% | -$4.19M |
|
|
FISV
1824
Fiserv Inc
FISV
$28B
| $6.52M | ﹤0.01% |
132,861
-266,961
| -67% | -$14.9M |
|
1825
Foster
FSTR
$401M
| $6.51M | ﹤0.01% |
+144,194
| New | +$5.38M |
|
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.