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 | |
|---|---|---|---|---|---|---|
2776
CALL
Blackstone
BX
$108B
| $2.33M | ﹤0.01% |
+19,800
| New | +$2.38M |
|
2777
Qualys
QLYS
$6.3B
| $2.33M | ﹤0.01% |
16,924
-138,112
| -89% | -$13.6M |
|
2778
CALL
Interactive Brokers
IBKR
$42.5B
| $2.32M | ﹤0.01% |
26,700
-17,300
| -39% | -$1.44M |
|
2779
Peoples Financial Services
PFIS
$702M
| $2.32M | ﹤0.01% |
34,944
+13,009
| +59% | +$771K |
|
|
WLII
2780
Willow Lane Acquisition Corp II
WLII
| $2.32M | ﹤0.01% |
+226,562
| New | +$2.29M |
|
2781
CALL
Kraft Heinz
KHC
$30.3B
| $2.31M | ﹤0.01% |
98,000
+45,800
| +88% | +$1.06M |
|
2782
Afya
AFYA
$1.27B
| $2.31M | ﹤0.01% |
155,712
-166,574
| -52% | -$2.41M |
|
2783
PUT
Sprouts Farmers Market
SFM
$7.56B
| $2.31M | ﹤0.01% |
27,300
+3,100
| +13% | +$251K |
|
|
TLN
2784
PUT
Talen Energy Corp
TLN
$15.1B
| $2.31M | ﹤0.01% |
6,000
-32,500
| -84% | -$11.9M |
|
|
TVIVU
2785
Texas Ventures Acquisition IV Corp Units
TVIVU
| $2.3M | ﹤0.01% |
+230,079
| New | +$2.3M |
|
2786
PUT
Ulta Beauty
ULTA
$22.4B
| $2.3M | ﹤0.01% |
5,100
+4,100
| +410% | +$2.08M |
|
2787
Hycroft Mining Holding Corp
HYMC
$2.52B
| $2.3M | ﹤0.01% |
98,268
+70,121
| +249% | +$2.37M |
|
|
ELMT
2788
The Elmet Group
ELMT
$606M
| $2.29M | ﹤0.01% |
+116,024
| New | +$1.99M |
|
|
TIGR
2789
UP Fintech Holding
TIGR
$952M
| $2.29M | ﹤0.01% |
520,202
+506,002
| +3,563% | +$2.95M |
|
|
AESPU
2790
Aeon Acquisition I Corp Units
AESPU
| $2.29M | ﹤0.01% |
+226,562
| New | +$2.28M |
|
2791
Mid Penn Bancorp
MPB
$943M
| $2.29M | ﹤0.01% |
65,652
+22,568
| +52% | +$748K |
|
2792
SM Energy
SM
$8.85B
| $2.28M | ﹤0.01% |
+87,490
| New | +$2.63M |
|
2793
FirstService
FSV
$6.35B
| $2.28M | ﹤0.01% |
16,063
+11,796
| +276% | +$1.64M |
|
2794
iShares S&P Small-Cap 600 Value ETF
IJS
$8.33B
| $2.28M | ﹤0.01% |
16,700
-9,000
| -35% | -$1.16M |
|
|
TALK
2795
DELISTED
Talkspace
TALK
| $2.28M | ﹤0.01% |
438,424
+305,127
| +229% | +$1.58M |
|
2796
Marqeta
MQ
$1.7B
| $2.28M | ﹤0.01% |
140,167
-225,361
| -62% | -$3.66M |
|
|
NOEM
2797
CO2 Energy Transition Corp
NOEM
| $2.27M | ﹤0.01% |
217,499
| – | – |
|
2798
Tarsus Pharmaceuticals
TARS
$3.19B
| $2.27M | ﹤0.01% |
36,038
+16,960
| +89% | +$1.08M |
|
2799
CALL
McKesson
MCK
$100B
| $2.27M | ﹤0.01% |
+3,000
| New | +$2.38M |
|
2800
Holley
HLLY
$375M
| $2.26M | ﹤0.01% |
888,208
-147,795
| -14% | -$419K |
|
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.