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 | |
|---|---|---|---|---|---|---|
3651
E.W. Scripps
SSP
$308M
| $508K | ﹤0.01% |
136,549
-147,441
| -52% | -$544K |
|
3652
BRC Group Holdings
RILY
$283M
| $506K | ﹤0.01% |
69,148
-16,791
| -20% | -$125K |
|
3653
LegalZoom.com
LZ
$1.03B
| $506K | ﹤0.01% |
+89,200
| New | +$677K |
|
3654
CALL
Huntington Bancshares
HBAN
$34.4B
| $505K | ﹤0.01% |
+32,300
| New | +$552K |
|
3655
CALL
Antero Resources
AR
$11.7B
| $505K | ﹤0.01% |
11,900
+5,300
| +80% | +$193K |
|
3656
Bank7 Corp
BSVN
$497M
| $503K | ﹤0.01% |
12,617
-1,674
| -12% | -$70.8K |
|
3657
C&F Financial
CFFI
$283M
| $503K | ﹤0.01% |
6,894
-1,211
| -15% | -$89.1K |
|
3658
PUT
Woodward
WWD
$19.7B
| $501K | ﹤0.01% |
+1,400
| New | +$504K |
|
3659
PUT
Wabtec
WAB
$50.3B
| $500K | ﹤0.01% |
+2,000
| New | +$484K |
|
3660
Revolve Group
RVLV
$1.7B
| $499K | ﹤0.01% |
+22,076
| New | +$579K |
|
3661
PUT
Pinterest
PINS
$13.3B
| $499K | ﹤0.01% |
27,200
-29,900
| -52% | -$624K |
|
|
UROY
3662
Uranium Royalty Corp
UROY
$1.67B
| $498K | ﹤0.01% |
136,369
+1,100
| +0.8% | +$4.49K |
|
3663
PUT
Range Resources
RRC
$9.64B
| $497K | ﹤0.01% |
+11,000
| New | +$429K |
|
|
GRO
3664
Brazil Potash Corp
GRO
$157M
| $497K | ﹤0.01% |
153,389
+137,330
| +855% | +$389K |
|
|
CTNM
3665
Contineum Therapeutics
CTNM
$626M
| $495K | ﹤0.01% |
37,916
| – | – |
|
3666
Visteon
VC
$2.72B
| $495K | ﹤0.01% |
+5,433
| New | +$514K |
|
3667
PUT
ATI
ATI
$28.6B
| $495K | ﹤0.01% |
3,400
-600
| -15% | -$83.5K |
|
|
IRD
3668
Opus Genetics
IRD
$335M
| $494K | ﹤0.01% |
108,641
-42,671
| -28% | -$148K |
|
3669
NovoCure
NVCR
$1.95B
| $494K | ﹤0.01% |
45,318
-307,141
| -87% | -$3.84M |
|
3670
Perion Network
PERI
$385M
| $494K | ﹤0.01% |
49,400
-7,006
| -12% | -$63.4K |
|
|
CCRN
3671
DELISTED
Cross Country Healthcare
CCRN
| $493K | ﹤0.01% |
52,451
+27,600
| +111% | +$247K |
|
3672
Equillium
EQ
$139M
| $492K | ﹤0.01% |
246,173
-78,437
| -24% | -$129K |
|
3673
RCM Technologies
RCMT
$292M
| $492K | ﹤0.01% |
25,713
+12,414
| +93% | +$241K |
|
3674
CALL
Tower Semiconductor
TSEM
$23.9B
| $491K | ﹤0.01% |
2,800
-3,200
| -53% | -$430K |
|
3675
Zevra Therapeutics
ZVRA
$692M
| $489K | ﹤0.01% |
52,436
-13,200
| -20% | -$119K |
|
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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.