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 |
NVIDIA
NVDA
|
+$1.84B |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$1.38B |
| 3 |
Apple
AAPL
|
+$1.31B |
| 4 |
Amazon
AMZN
|
+$1.14B |
| 5 |
Tesla
TSLA
|
+$966M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amgen
AMGN
|
+$224M |
| 2 |
VanEck Semiconductor ETF
SMH
|
+$216M |
| 3 |
Procter & Gamble
PG
|
+$215M |
| 4 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$212M |
| 5 |
Eaton
ETN
|
+$197M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 18.76% |
| 2 | Financials | 13.52% |
| 3 | Healthcare | 11.32% |
| 4 | Industrials | 11.3% |
| 5 | Consumer Discretionary | 10.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
NP
2951
Neptune Insurance Holdings
NP
$4.72B
| $1.35M | ﹤0.01% |
55,977
+39,368
| +237% | +$911K |
|
2952
Ciena
CIEN
$54.9B
| $1.35M | ﹤0.01% |
3,486
-17,615
| -83% | -$5.39M |
|
2953
World Kinect Corp
WKC
$1.81B
| $1.35M | ﹤0.01% |
58,623
-95,018
| -62% | -$2.41M |
|
|
SFBS
2954
ServisFirst Bancshares
SFBS
$4.72B
| $1.35M | ﹤0.01% |
36,954
+27,446
| +289% | +$1.09M |
|
2955
First Trust Horizon Managed Volatility Domestic ETF
HUSV
$84.4M
| $1.34M | ﹤0.01% |
35,071
+27,871
| +387% | +$1.1M |
|
2956
Root
ROOT
$894M
| $1.34M | ﹤0.01% |
+30,435
| New | +$1.78M |
|
2957
Tarsus Pharmaceuticals
TARS
$3.14B
| $1.34M | ﹤0.01% |
19,078
| – | – |
|
2958
Tractor Supply
TSCO
$18.4B
| $1.34M | ﹤0.01% |
+29,537
| New | +$1.51M |
|
|
HSPT
2959
DELISTED
Horizon Space Acquisition II Corp
HSPT
| $1.34M | ﹤0.01% |
207,299
-10,200
| -5% | -$103K |
|
2960
Palomar
PLMR
$3.47B
| $1.34M | ﹤0.01% |
11,174
+2,000
| +22% | +$250K |
|
|
SNBR
2961
DELISTED
Sleep Number
SNBR
| $1.33M | ﹤0.01% |
743,168
+637,349
| +602% | +$4.8M |
|
2962
CALL
Sysco
SYY
$40B
| $1.33M | ﹤0.01% |
18,600
+13,300
| +251% | +$1.1M |
|
2963
CALL
Amphenol
APH
$196B
| $1.33M | ﹤0.01% |
+10,500
| New | +$1.48M |
|
2964
First Trust S&P REIT Index Fund
FRI
$200M
| $1.33M | ﹤0.01% |
46,600
+12,100
| +35% | +$348K |
|
2965
Park Aerospace
PKE
$707M
| $1.32M | ﹤0.01% |
48,269
+28,444
| +143% | +$728K |
|
2966
PUT
Deckers Outdoor
DECK
$12.1B
| $1.32M | ﹤0.01% |
13,200
-7,700
| -37% | -$826K |
|
2967
Itron
ITRI
$4.32B
| $1.32M | ﹤0.01% |
14,726
-8,500
| -37% | -$816K |
|
2968
EVgo
EVGO
$211M
| $1.32M | ﹤0.01% |
766,769
+328,940
| +75% | +$879K |
|
2969
CALL
On Holding
ONON
$9.64B
| $1.31M | ﹤0.01% |
38,600
+29,600
| +329% | +$1.29M |
|
|
URG
2970
Ur-Energy
URG
$589M
| $1.31M | ﹤0.01% |
879,258
+16,800
| +2% | +$27.4K |
|
2971
iShares US Small Cap Value Factor ETF
SVAL
$210M
| $1.3M | ﹤0.01% |
+36,300
| New | +$1.33M |
|
2972
PUT
Teradyne
TER
$57.3B
| $1.3M | ﹤0.01% |
4,400
-2,600
| -37% | -$725K |
|
2973
PUT
Dow Inc
DOW
$21.8B
| $1.3M | ﹤0.01% |
31,300
-11,700
| -27% | -$371K |
|
2974
Galectin Therapeutics
GALT
$402M
| $1.3M | ﹤0.01% |
467,063
+450,451
| +2,712% | +$1.37M |
|
2975
OSI Systems
OSIS
$3.25B
| $1.3M | ﹤0.01% |
+4,900
| New | +$1.35M |
|
Similar funds
John Overdeck's Q1 2026 Portfolio in Review
As of Q1 2026, John Overdeck held 5,070 positions worth $124B, up 75% from $70.9B the previous quarter. Its ten largest holdings account for 9.4% of the portfolio.
John Overdeck deployed $54.2B of net new capital in Q1 2026, opening 1,038 new positions and adding to 2,050 existing holdings. Its largest new stake was Broadcom: 2,225,253 shares worth $689M.
By sector, the portfolio is most concentrated in Technology at 19% of assets, up from 16% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was Amgen, an estimated $224M trimmed.
- John Overdeck's largest Q1 2026 buy was Broadcom: 2,225,253 shares worth $689M.
- John Overdeck added most to NVIDIA in Q1 2026, an estimated $1.84B increase.
- John Overdeck's biggest Q1 2026 reduction was Amgen, cutting an estimated $224M.
- John Overdeck fully exited First Trust Dow Jones Internet Index Fund ETF in Q1 2026, selling an estimated $82.2M.
- John Overdeck's ten largest holdings make up 9.4% of its $124B portfolio in Q1 2026.
- John Overdeck opened 1,038 new positions and closed 524 in Q1 2026.
- John Overdeck's portfolio value rose 75% quarter-over-quarter to $124B.
Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.