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 | |
|---|---|---|---|---|---|---|
951
Crane NXT
CXT
$2.87B
| $18.4M | 0.01% |
453,162
+232,277
| +105% | +$11.3M |
|
952
Axcelis
ACLS
$3.81B
| $18.4M | 0.01% |
197,566
+126,322
| +177% | +$11.2M |
|
953
Vornado Realty Trust
VNO
$7.26B
| $18.3M | 0.01% |
706,006
+672,985
| +2,038% | +$19.9M |
|
954
First Majestic Silver
AG
$10.3B
| $18.3M | 0.01% |
852,248
-764,083
| -47% | -$17.6M |
|
955
Iron Mountain
IRM
$36.1B
| $18.3M | 0.01% |
179,202
-110,958
| -38% | -$11M |
|
956
Kirby Corp
KEX
$7.32B
| $18.3M | 0.01% |
137,583
+70,745
| +106% | +$8.96M |
|
|
957
CALL
Apple
AAPL
$4.53T
| $18.3M | 0.01% |
72,000
-179,000
| -71% | -$46.6M |
|
958
Horace Mann Educators
HMN
$2.07B
| $18.2M | 0.01% |
427,258
+348,603
| +443% | +$15.1M |
|
959
Bankunited
BKU
$3.3B
| $18.2M | 0.01% |
403,107
+294,753
| +272% | +$13.8M |
|
960
Elbit Systems
ESLT
$34.2B
| $18.2M | 0.01% |
21,431
+8,640
| +68% | +$6.66M |
|
961
W.R. Berkley
WRB
$25.9B
| $18.1M | 0.01% |
272,989
+246,436
| +928% | +$17M |
|
962
CALL
ExxonMobil
XOM
$675B
| $18.1M | 0.01% |
106,600
-130,000
| -55% | -$19M |
|
963
CALL
SoFi Technologies
SOFI
$23.6B
| $18.1M | 0.01% |
1,137,500
-43,200
| -4% | -$911K |
|
964
Dana Inc
DAN
$3.24B
| $18M | 0.01% |
536,309
+463,241
| +634% | +$14.5M |
|
|
THR
965
DELISTED
Thermon Group Holdings
THR
| $18M | 0.01% |
356,278
+268,237
| +305% | +$12.5M |
|
966
BrightView Holdings
BV
$1.01B
| $17.9M | 0.01% |
1,518,460
+770,040
| +103% | +$9.96M |
|
967
Invesco Mortgage Capital
IVR
$805M
| $17.9M | 0.01% |
2,213,915
+605,383
| +38% | +$5.17M |
|
968
Vermilion Energy
VET
$1.92B
| $17.9M | 0.01% |
1,296,543
-72,684
| -5% | -$771K |
|
969
Hanover Insurance
THG
$7.92B
| $17.8M | 0.01% |
102,851
+87,902
| +588% | +$15.3M |
|
|
VRE
970
DELISTED
Veris Residential
VRE
| $17.8M | 0.01% |
943,876
+518,615
| +122% | +$8.8M |
|
|
PSTL
971
Postal Realty Trust
PSTL
$696M
| $17.8M | 0.01% |
959,499
+656,245
| +216% | +$12.2M |
|
|
GRMN
972
Garmin
GRMN
$56.2B
| $17.8M | 0.01% |
76,682
+67,221
| +711% | +$15M |
|
973
iShares Global Tech ETF
IXN
$9.24B
| $17.8M | 0.01% |
177,600
-46,300
| -21% | -$4.89M |
|
974
Sprouts Farmers Market
SFM
$8.03B
| $17.7M | 0.01% |
229,956
-378,604
| -62% | -$28.3M |
|
975
RPC Inc
RES
$1.37B
| $17.7M | 0.01% |
2,501,613
+1,712,509
| +217% | +$10.7M |
|
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.