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 | |
|---|---|---|---|---|---|---|
|
UROY
3951
Uranium Royalty Corp
UROY
$1.67B
| $591K | ﹤0.01% |
212,503
+76,134
| +56% | +$267K |
|
|
TTAN
3952
ServiceTitan Inc
TTAN
$9.05B
| $590K | ﹤0.01% |
+8,349
| New | +$537K |
|
3953
CALL
Progressive
PGR
$127B
| $590K | ﹤0.01% |
+2,700
| New | +$544K |
|
|
3954
PUT
Progressive
PGR
$127B
| $590K | ﹤0.01% |
+2,700
| New | +$544K |
|
3955
CALL
IES Holdings
IESC
$27.3B
| $588K | ﹤0.01% |
800
-1,100
| -58% | -$710K |
|
|
3956
PUT
IES Holdings
IESC
$27.3B
| $588K | ﹤0.01% |
800
-500
| -38% | -$323K |
|
3957
Citi Trends
CTRN
$597M
| $588K | ﹤0.01% |
10,159
-4,781
| -32% | -$229K |
|
3958
PUT
BP
BP
$115B
| $588K | ﹤0.01% |
15,900
+9,300
| +141% | +$408K |
|
|
MESO
3959
Mesoblast
MESO
$2.2B
| $587K | ﹤0.01% |
43,403
+3,601
| +9% | +$53.5K |
|
3960
CALL
Camtek
CAMT
$6.85B
| $587K | ﹤0.01% |
+3,600
| New | +$638K |
|
|
EMBJ
3961
CALL
Embraer S.A. ADS
EMBJ
$13.5B
| $587K | ﹤0.01% |
+9,200
| New | +$565K |
|
3962
PUT
Antero Resources
AR
$11.7B
| $587K | ﹤0.01% |
16,700
+11,400
| +215% | +$420K |
|
3963
CALL
Insmed
INSM
$27.5B
| $586K | ﹤0.01% |
+5,500
| New | +$666K |
|
3964
Townsquare Media
TSQ
$108M
| $585K | ﹤0.01% |
82,784
+20,018
| +32% | +$130K |
|
3965
Tredegar Corp
TG
$278M
| $585K | ﹤0.01% |
73,491
+3,823
| +5% | +$32.4K |
|
3966
PUT
Blue Owl Capital
OWL
$18.2B
| $585K | ﹤0.01% |
66,800
-9,000
| -12% | -$85.5K |
|
3967
Hanover Bancorp
HNVR
$191M
| $579K | ﹤0.01% |
+24,809
| New | +$570K |
|
3968
PUT
RH
RH
$2.9B
| $577K | ﹤0.01% |
3,500
-7,400
| -68% | -$1.02M |
|
3969
Healthcare Services Group
HCSG
$1.56B
| $576K | ﹤0.01% |
23,469
-7,536
| -24% | -$159K |
|
3970
NeoGenomics
NEO
$2.18B
| $576K | ﹤0.01% |
+39,455
| New | +$381K |
|
|
NB
3971
NioCorp Developments
NB
$676M
| $575K | ﹤0.01% |
119,379
+785
| +0.7% | +$4.3K |
|
3972
PUT
American Electric Power
AEP
$65.8B
| $575K | ﹤0.01% |
4,200
-1,800
| -30% | -$237K |
|
3973
PUT
Icon
ICLR
$13.3B
| $573K | ﹤0.01% |
+3,300
| New | +$420K |
|
|
B
3974
PUT
Barrick Mining
B
$78.3B
| $573K | ﹤0.01% |
15,600
-6,500
| -29% | -$266K |
|
3975
TripAdvisor
TRIP
$1.17B
| $573K | ﹤0.01% |
41,793
+993
| +2% | +$11.2K |
|
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.