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 | |
|---|---|---|---|---|---|---|
876
MGIC Investment
MTG
$6.38B
| $24.7M | 0.02% |
875,538
+394,891
| +82% | +$10.5M |
|
877
Zai Lab
ZLAB
$2.88B
| $24.7M | 0.02% |
1,299,394
+989,671
| +320% | +$19.6M |
|
878
Donaldson
DCI
$10.7B
| $24.6M | 0.02% |
274,251
-504,968
| -65% | -$43.4M |
|
879
State Street Utilities Select Sector SPDR ETF
XLU
$22.2B
| $24.6M | 0.02% |
+542,815
| New | +$24.6M |
|
880
Celldex Therapeutics
CLDX
$3.19B
| $24.6M | 0.02% |
661,235
+524,220
| +383% | +$16.9M |
|
881
S&T Bancorp
STBA
$1.77B
| $24.6M | 0.02% |
501,201
+106,881
| +27% | +$4.81M |
|
|
TEN
882
Tsakos Energy Navigation Ltd
TEN
$1.28B
| $24.6M | 0.02% |
694,416
+337,401
| +95% | +$13.4M |
|
|
AUGO
883
Aura Minerals Inc
AUGO
$7.32B
| $24.5M | 0.02% |
389,085
-302,810
| -44% | -$23.9M |
|
884
Tronox
TROX
$861M
| $24.5M | 0.02% |
3,885,586
+1,918,420
| +98% | +$16.3M |
|
885
Commault Systems
CVLT
$5.43B
| $24.4M | 0.02% |
172,114
-951,754
| -85% | -$102M |
|
886
Sociedad Química y Minera de Chile
SQM
$23.5B
| $24.4M | 0.02% |
329,404
+25,117
| +8% | +$2.1M |
|
887
PUT
Arista Networks
ANET
$237B
| $24.2M | 0.02% |
142,200
+43,800
| +45% | +$6.88M |
|
888
AZZ Inc
AZZ
$4.23B
| $24.2M | 0.02% |
155,785
-70,869
| -31% | -$10.1M |
|
889
iShares MSCI USA Quality Factor ETF
QUAL
$47.8B
| $24.1M | 0.02% |
109,800
+18,500
| +20% | +$3.88M |
|
890
Credo Technology Group
CRDO
$41.5B
| $24.1M | 0.02% |
88,460
-272,300
| -75% | -$53.8M |
|
891
Brunswick
BC
$5.26B
| $24M | 0.02% |
284,893
-150,476
| -35% | -$12.1M |
|
892
Customers Bancorp
CUBI
$2.67B
| $24M | 0.02% |
303,141
+70,425
| +30% | +$5.33M |
|
893
CALL
CrowdStrike
CRWD
$194B
| $24M | 0.02% |
125,600
+14,400
| +13% | +$2.05M |
|
894
BWX Technologies
BWXT
$13.7B
| $24M | 0.02% |
123,094
-428,678
| -78% | -$89.3M |
|
895
Allegro MicroSystems
ALGM
$6.64B
| $23.9M | 0.02% |
343,994
-295,847
| -46% | -$13.8M |
|
896
Booking.com
BKNG
$160B
| $23.9M | 0.02% |
134,300
+1,800
| +1% | +$307K |
|
897
CONMED
CNMD
$1.54B
| $23.9M | 0.02% |
728,976
-53,564
| -7% | -$1.93M |
|
898
Cisco
CSCO
$434B
| $23.8M | 0.02% |
202,859
+168,959
| +498% | +$17.7M |
|
899
Patterson-UTI
PTEN
$4.52B
| $23.8M | 0.02% |
2,595,426
-988,828
| -28% | -$11M |
|
900
AutoZone
AZO
$49.1B
| $23.8M | 0.02% |
7,455
-47,412
| -86% | -$158M |
|
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.