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 | |
|---|---|---|---|---|---|---|
4226
MainStreet Bancshares
MNSB
$177M
| $412K | ﹤0.01% |
+16,699
| New | +$393K |
|
4227
PUT
BorgWarner
BWA
$13.8B
| $412K | ﹤0.01% |
+6,200
| New | +$393K |
|
4228
KVH Industries
KVHI
$140M
| $411K | ﹤0.01% |
+41,512
| New | +$397K |
|
4229
PUT
Red Cat Holdings
RCAT
$1.47B
| $411K | ﹤0.01% |
+38,600
| New | +$445K |
|
4230
Flexsteel Industries
FLXS
$332M
| $411K | ﹤0.01% |
5,519
-4,137
| -43% | -$232K |
|
|
GRRR
4231
Gorilla Technology Group
GRRR
$442M
| $410K | ﹤0.01% |
+20,646
| New | +$311K |
|
4232
CALL
Microchip Technology
MCHP
$41.3B
| $410K | ﹤0.01% |
4,500
-500
| -10% | -$44.6K |
|
4233
PUT
Stryker
SYK
$126B
| $409K | ﹤0.01% |
1,300
-400
| -24% | -$126K |
|
4234
CALL
Welltower
WELL
$172B
| $409K | ﹤0.01% |
1,800
-100
| -5% | -$21.1K |
|
4235
Arbutus Biopharma
ABUS
$1.03B
| $408K | ﹤0.01% |
+84,986
| New | +$373K |
|
4236
Medallion Financial
MFIN
$268M
| $407K | ﹤0.01% |
39,889
-58,863
| -60% | -$557K |
|
4237
Liberty Live Group Series C
LLYVK
$9.7B
| $407K | ﹤0.01% |
+3,853
| New | +$376K |
|
|
BULL
4238
PUT
Webull Corp
BULL
$4.67B
| $407K | ﹤0.01% |
62,400
-18,400
| -23% | -$119K |
|
4239
NewAmsterdam Pharma
NAMS
$3.33B
| $407K | ﹤0.01% |
+12,001
| New | +$395K |
|
4240
PUT
Corteva
CTVA
$54.6B
| $407K | ﹤0.01% |
4,800
+1,800
| +60% | +$145K |
|
4241
CALL
Copart
CPRT
$31.3B
| $406K | ﹤0.01% |
14,400
+7,400
| +106% | +$239K |
|
4242
InflaRx
IFRX
$309M
| $406K | ﹤0.01% |
181,118
-7,957
| -4% | -$15K |
|
4243
Coda Octopus Group
CODA
$114M
| $405K | ﹤0.01% |
41,415
+16,816
| +68% | +$195K |
|
|
GAP
4244
PUT
The Gap Inc
GAP
$7.13B
| $403K | ﹤0.01% |
21,600
+7,400
| +52% | +$171K |
|
4245
CALL
Bristol-Myers Squibb
BMY
$137B
| $403K | ﹤0.01% |
7,000
-28,700
| -80% | -$1.65M |
|
|
BORR
4246
Borr Drilling
BORR
$1.39B
| $402K | ﹤0.01% |
97,440
-298,987
| -75% | -$1.61M |
|
4247
CALL
Unum
UNM
$13.9B
| $402K | ﹤0.01% |
+4,500
| New | +$373K |
|
4248
CALL
Paycom
PAYC
$10.3B
| $402K | ﹤0.01% |
+3,200
| New | +$417K |
|
4249
Construction Partners
ROAD
$6.37B
| $402K | ﹤0.01% |
+3,385
| New | +$402K |
|
4250
CALL
Entergy
ETR
$48.8B
| $402K | ﹤0.01% |
+3,500
| New | +$395K |
|
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.