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 | |
|---|---|---|---|---|---|---|
1551
TFS Financial
TFSL
$4.95B
| $8.8M | 0.01% |
496,877
+174,493
| +54% | +$2.72M |
|
|
BLZR
1552
Trailblazer Acquisition Corp
BLZR
$350M
| $8.8M | 0.01% |
869,999
| – | – |
|
1553
Mercury Systems
MRCY
$5.49B
| $8.79M | 0.01% |
71,861
-90,208
| -56% | -$8.59M |
|
|
BCSS
1554
Bain Capital GSS Investment Corp
BCSS
$600M
| $8.78M | 0.01% |
854,756
| – | – |
|
|
AEXA
1555
American Exceptionalism Acquisition Corp
AEXA
$578M
| $8.73M | 0.01% |
738,505
| – | – |
|
1556
CALL
Merck
MRK
$376B
| $8.73M | 0.01% |
67,900
+9,000
| +15% | +$1.05M |
|
1557
AAR Corp
AIR
$5.43B
| $8.72M | 0.01% |
61,038
+39,039
| +177% | +$4.61M |
|
1558
Artivion
AORT
$1.37B
| $8.7M | 0.01% |
387,279
-338,573
| -47% | -$9.47M |
|
1559
Ring Energy
REI
$386M
| $8.69M | 0.01% |
8,047,045
+1,991,422
| +33% | +$2.78M |
|
1560
CALL
Applied Materials
AMAT
$391B
| $8.68M | 0.01% |
12,000
-700
| -6% | -$323K |
|
1561
Fidelity MSCI Energy Index ETF
FENY
$2.15B
| $8.67M | 0.01% |
+293,300
| New | +$9.34M |
|
|
AVBH
1562
Avidbank Holdings
AVBH
$352M
| $8.66M | 0.01% |
262,300
+210,254
| +404% | +$6.41M |
|
1563
Gran Tierra Energy
GTE
$351M
| $8.66M | 0.01% |
1,385,858
+426,944
| +45% | +$3.49M |
|
|
1564
PUT
Micron Technology
MU
$1.09T
| $8.66M | 0.01% |
7,500
-9,800
| -57% | -$7.35M |
|
1565
1st Source
SRCE
$2.07B
| $8.64M | 0.01% |
105,952
+8,490
| +9% | +$634K |
|
1566
Home Bancorp
HBCP
$549M
| $8.59M | 0.01% |
125,407
+65,407
| +109% | +$4.23M |
|
|
EAGL
1567
Eagle Capital Select Equity ETF
EAGL
$4.74B
| $8.58M | 0.01% |
+266,740
| New | +$8.63M |
|
|
WENN
1568
Wen Acquisition Corp
WENN
$390M
| $8.58M | 0.01% |
833,694
| – | – |
|
1569
Genworth Financial
GNW
$3.73B
| $8.57M | 0.01% |
904,974
+496,374
| +121% | +$4.41M |
|
1570
Roper Technologies
ROP
$40.7B
| $8.56M | 0.01% |
25,283
+2,224
| +10% | +$758K |
|
1571
Church & Dwight Co
CHD
$23.4B
| $8.55M | 0.01% |
88,276
-497,313
| -85% | -$47.5M |
|
1572
CALL
Rocket Lab Corp
RKLB
$46.4B
| $8.55M | 0.01% |
84,100
+20,900
| +33% | +$2.08M |
|
1573
Thermo Fisher Scientific
TMO
$233B
| $8.53M | 0.01% |
17,014
-170,879
| -91% | -$82M |
|
1574
ePlus
PLUS
$2.27B
| $8.5M | 0.01% |
102,130
-9,933
| -9% | -$826K |
|
1575
Ranger Energy Services
RNGR
$401M
| $8.49M | 0.01% |
530,264
+401,583
| +312% | +$6.58M |
|
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.