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 | |
|---|---|---|---|---|---|---|
226
Penumbra
PEN
$12.8B
| $135M | 0.1% |
428,128
+369,909
| +635% | +$120M |
|
227
Knight Transportation
KNX
$11.7B
| $134M | 0.1% |
1,718,786
+1,498,672
| +681% | +$104M |
|
228
Semtech
SMTC
$11.6B
| $133M | 0.1% |
820,898
+771,989
| +1,578% | +$101M |
|
229
Graco
GGG
$13.1B
| $133M | 0.1% |
1,756,121
-484,654
| -22% | -$38.2M |
|
|
P
230
Everpure Inc
P
$36.1B
| $133M | 0.1% |
1,683,982
+32,962
| +2% | +$2.42M |
|
231
Insmed
INSM
$27.5B
| $132M | 0.1% |
1,242,222
+1,005,205
| +424% | +$122M |
|
232
Cadence Design Systems
CDNS
$87.9B
| $132M | 0.1% |
351,934
-171,431
| -33% | -$60.1M |
|
233
STMicroelectronics
STM
$45.1B
| $132M | 0.1% |
1,757,357
-985,363
| -36% | -$59.3M |
|
234
Chewy
CHWY
$9.83B
| $131M | 0.09% |
6,648,996
+436,104
| +7% | +$9.9M |
|
235
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$23.4B
| $130M | 0.09% |
1,108,300
-666,554
| -38% | -$77.8M |
|
236
Albemarle Corp Depositary Shares
ALB.PRA
$2.66B
| $130M | 0.09% |
2,340,026
-143,195
| -6% | -$10.1M |
|
237
Halozyme
HALO
$12.3B
| $129M | 0.09% |
1,653,285
+68,324
| +4% | +$4.66M |
|
238
Pan American Silver
PAAS
$22B
| $129M | 0.09% |
2,877,110
+1,318,373
| +85% | +$70.6M |
|
239
Bank of America
BAC
$431B
| $128M | 0.09% |
2,250,637
-4,023,757
| -64% | -$214M |
|
240
Accenture
ACN
$113B
| $128M | 0.09% |
1,028,658
+210,054
| +26% | +$36.5M |
|
241
Brown & Brown
BRO
$24.4B
| $128M | 0.09% |
1,993,822
+828,538
| +71% | +$50.5M |
|
242
Invesco KBW Bank ETF
KBWB
$6.75B
| $127M | 0.09% |
1,368,448
+287,900
| +27% | +$25.2M |
|
243
Clean Harbors
CLH
$16.7B
| $126M | 0.09% |
423,106
-300,922
| -42% | -$88.9M |
|
|
LGN
244
Legence Corp
LGN
$4.57B
| $126M | 0.09% |
1,478,072
+1,410,097
| +2,074% | +$115M |
|
245
RH
RH
$2.9B
| $126M | 0.09% |
763,447
+486,695
| +176% | +$67.1M |
|
|
SUNC
246
SunocoCorp LLC
SUNC
$3.98B
| $126M | 0.09% |
1,854,718
+563,739
| +44% | +$36.9M |
|
247
ATI
ATI
$28.2B
| $125M | 0.09% |
636,671
+618,896
| +3,482% | +$105M |
|
248
Reliance Steel & Aluminium
RS
$19.8B
| $125M | 0.09% |
335,144
+256,729
| +327% | +$93.9M |
|
249
Brookfield Infrastructure Partners
BIP
$17.9B
| $124M | 0.09% |
3,409,065
+511,249
| +18% | +$19.1M |
|
250
iShares US Medical Devices ETF
IHI
$3.49B
| $124M | 0.09% |
2,513,300
+1,396,300
| +125% | +$70.9M |
|
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.