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 | |
|---|---|---|---|---|---|---|
2051
Stratasys
SSYS
$692M
| $5.11M | ﹤0.01% |
596,677
+564,319
| +1,744% | +$4.94M |
|
2052
Medifast
MED
$134M
| $5.11M | ﹤0.01% |
481,381
+143,223
| +42% | +$1.65M |
|
2053
Ryanair
RYAAY
$28.9B
| $5.1M | ﹤0.01% |
78,822
-56,196
| -42% | -$3.31M |
|
2054
PUT
Natera
NTRA
$47.9B
| $5.1M | ﹤0.01% |
18,800
+16,200
| +623% | +$3.45M |
|
|
SOCA
2055
Solarius Capital Acquisition Corp
SOCA
| $5.1M | ﹤0.01% |
497,161
| – | – |
|
2056
PUT
Live Nation Entertainment
LYV
$42.4B
| $5.09M | ﹤0.01% |
+27,800
| New | +$4.57M |
|
2057
FTAI Aviation
FTAI
$21.5B
| $5.09M | ﹤0.01% |
18,814
-75,954
| -80% | -$19.1M |
|
|
TOPT
2058
iShares Top 20 U.S. Stocks ETF
TOPT
$670M
| $5.08M | ﹤0.01% |
+154,200
| New | +$5M |
|
2059
New Mountain Finance
NMFC
$714M
| $5.07M | ﹤0.01% |
707,346
-129,111
| -15% | -$1.03M |
|
2060
PUT
NRG Energy
NRG
$23.8B
| $5.07M | ﹤0.01% |
+34,700
| New | +$5M |
|
2061
Shinhan Financial Group
SHG
$35B
| $5.06M | ﹤0.01% |
80,016
-156,910
| -66% | -$10.3M |
|
2062
PUT
DoorDash
DASH
$96.8B
| $5.06M | ﹤0.01% |
27,400
-2,600
| -9% | -$430K |
|
2063
Fastenal
FAST
$58.8B
| $5.06M | ﹤0.01% |
105,267
+47,765
| +83% | +$2.17M |
|
|
JACS
2064
Jackson Acquisition Co II
JACS
$318M
| $5.05M | ﹤0.01% |
474,821
| – | – |
|
2065
EPAM Systems
EPAM
$5.69B
| $5.05M | ﹤0.01% |
63,600
-262
| -0.4% | -$27.7K |
|
2066
Aegon
AEG
$13.3B
| $5.04M | ﹤0.01% |
597,288
+64,700
| +12% | +$533K |
|
|
NBIS
2067
PUT
Nebius Group N.V.
NBIS
$59.6B
| $5.03M | ﹤0.01% |
18,200
+8,200
| +82% | +$1.62M |
|
|
GUACU
2068
Berto Acquisition Corp II Unit
GUACU
| $5.03M | ﹤0.01% |
+496,624
| New | +$5M |
|
2069
AB InBev
BUD
$155B
| $5.02M | ﹤0.01% |
60,897
+39,703
| +187% | +$3.12M |
|
2070
TAL Education Group
TAL
$6.28B
| $5.01M | ﹤0.01% |
523,987
+12,787
| +3% | +$134K |
|
2071
Amphastar Pharmaceuticals
AMPH
$919M
| $5.01M | ﹤0.01% |
248,115
+109,967
| +80% | +$2.22M |
|
2072
Viemed Healthcare
VMD
$337M
| $5M | ﹤0.01% |
438,851
+25,457
| +6% | +$252K |
|
|
HMH
2073
HMH Holding Inc
HMH
$245M
| $5M | ﹤0.01% |
+266,912
| New | +$5.46M |
|
2074
PUT
Arm
ARM
$260B
| $5M | ﹤0.01% |
14,100
-67,500
| -83% | -$17.9M |
|
2075
PUT
Celestica
CLS
$37.4B
| $5M | ﹤0.01% |
13,700
-33,200
| -71% | -$12.5M |
|
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.