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 | |
|---|---|---|---|---|---|---|
3576
Entrada Therapeutics
TRDA
$285M
| $563K | ﹤0.01% |
44,602
-4,700
| -10% | -$53.9K |
|
3577
Cannae Holdings
CNNE
$668M
| $563K | ﹤0.01% |
+49,500
| New | +$664K |
|
3578
Santander
BSBR
$43.3B
| $560K | ﹤0.01% |
94,475
+29,713
| +46% | +$189K |
|
3579
PUT
Rio Tinto
RIO
$170B
| $560K | ﹤0.01% |
+6,000
| New | +$547K |
|
3580
CALL
Clorox
CLX
$13B
| $560K | ﹤0.01% |
5,400
-7,600
| -58% | -$862K |
|
3581
Exelon
EXC
$45.7B
| $560K | ﹤0.01% |
11,414
-5,786
| -34% | -$269K |
|
3582
PUT
Stryker
SYK
$126B
| $559K | ﹤0.01% |
+1,700
| New | +$610K |
|
3583
PUT
SiriusXM
SIRI
$9.59B
| $559K | ﹤0.01% |
24,200
+11,400
| +89% | +$245K |
|
3584
CALL
Shell
SHEL
$256B
| $558K | ﹤0.01% |
6,000
+1,000
| +20% | +$80.8K |
|
3585
PUT
Unity
U
$20.3B
| $557K | ﹤0.01% |
+25,400
| New | +$705K |
|
3586
CALL
Weyerhaeuser
WY
$17.6B
| $557K | ﹤0.01% |
+22,800
| New | +$573K |
|
3587
PUT
Core Scientific
CORZ
$5.55B
| $557K | ﹤0.01% |
37,200
| – | – |
|
3588
Harvard Bioscience
HBIO
$34.4M
| $556K | ﹤0.01% |
114,117
+12,875
| +13% | +$72K |
|
|
ABTC
3589
American Bitcoin Corp
ABTC
$629M
| $556K | ﹤0.01% |
40,075
-134,179
| -77% | -$2.58M |
|
3590
Jack in the Box
JACK
$342M
| $555K | ﹤0.01% |
57,398
-173,190
| -75% | -$3.06M |
|
3591
Tredegar Corp
TG
$278M
| $554K | ﹤0.01% |
69,668
+49,297
| +242% | +$412K |
|
3592
PUT
monday.com
MNDY
$3.98B
| $553K | ﹤0.01% |
+8,000
| New | +$768K |
|
3593
CALL
Affirm
AFRM
$25.7B
| $550K | ﹤0.01% |
+12,000
| New | +$693K |
|
3594
Fortress Biotech
FBIO
$97.7M
| $549K | ﹤0.01% |
196,825
+57,674
| +41% | +$196K |
|
3595
PUT
D.R. Horton
DHI
$41.7B
| $549K | ﹤0.01% |
4,000
-3,000
| -43% | -$453K |
|
3596
Enviri
NVRI
$595M
| $547K | ﹤0.01% |
+27,900
| New | +$518K |
|
3597
CALL
Capital One
COF
$133B
| $547K | ﹤0.01% |
3,000
-10,000
| -77% | -$2.09M |
|
3598
Phillips 66
PSX
$96.5B
| $547K | ﹤0.01% |
+3,000
| New | +$470K |
|
3599
American Public Education
APEI
$846M
| $546K | ﹤0.01% |
+9,600
| New | +$440K |
|
|
FSCS
3600
First Trust SMID Capital Strength ETF
FSCS
$61.1M
| $546K | ﹤0.01% |
15,500
| – | – |
|
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.