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 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$312M |
| 2 |
UnitedHealth
UNH
|
+$286M |
| 3 |
Duolingo
DUOL
|
+$247M |
| 4 |
Aon
AON
|
+$226M |
| 5 |
Chubb
CB
|
+$221M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$338M |
| 2 |
Marvell Technology
MRVL
|
+$241M |
| 3 |
Advanced Micro Devices
AMD
|
+$240M |
| 4 |
ServiceNow
NOW
|
+$203M |
| 5 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$193M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.79% |
| 2 | Financials | 14.46% |
| 3 | Healthcare | 12.9% |
| 4 | Consumer Discretionary | 8.97% |
| 5 | Industrials | 8.82% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CAPN
1926
Cayson Acquisition Corp
CAPN
$59.5M
| $1.54M | ﹤0.01% |
150,000
| – | – |
|
1927
PUT
Eos Energy Enterprises
EOSE
$1.29B
| $1.54M | ﹤0.01% |
+300,000
| New | +$1.47M |
|
1928
Silicon Motion
SIMO
$8.2B
| $1.53M | ﹤0.01% |
20,346
-70,678
| -78% | -$4.01M |
|
|
EWCZ
1929
DELISTED
European Wax Center
EWCZ
| $1.53M | ﹤0.01% |
271,533
-136,987
| -34% | -$622K |
|
1930
Oppenheimer Holdings
OPY
$1.24B
| $1.53M | ﹤0.01% |
23,217
-10,842
| -32% | -$662K |
|
1931
Papa John's
PZZA
$794M
| $1.53M | ﹤0.01% |
31,190
-180,571
| -85% | -$7.37M |
|
1932
Paysign
PAYS
$798M
| $1.52M | ﹤0.01% |
210,846
+68,361
| +48% | +$245K |
|
1933
Crinetics Pharmaceuticals
CRNX
$9B
| $1.52M | ﹤0.01% |
+52,779
| New | +$1.63M |
|
1934
Oxford Square Capital
OXSQ
$148M
| $1.51M | ﹤0.01% |
679,209
-183,506
| -21% | -$440K |
|
1935
Organon & Co
OGN
$3.61B
| $1.51M | ﹤0.01% |
+156,400
| New | +$1.61M |
|
1936
Shell
SHEL
$254B
| $1.51M | ﹤0.01% |
21,500
-1,014,582
| -98% | -$68M |
|
1937
T. Rowe Price
TROW
$24.1B
| $1.51M | ﹤0.01% |
15,675
-34,137
| -69% | -$3.13M |
|
1938
MakeMyTrip
MMYT
$5.68B
| $1.51M | ﹤0.01% |
15,423
-58,322
| -79% | -$5.88M |
|
|
LOVE
1939
LoveSac
LOVE
$233M
| $1.51M | ﹤0.01% |
83,063
-80,721
| -49% | -$1.53M |
|
1940
PC Connection
CNXN
$2B
| $1.51M | ﹤0.01% |
22,952
-9,537
| -29% | -$616K |
|
1941
Alliant Energy
LNT
$17.7B
| $1.51M | ﹤0.01% |
24,951
-128,524
| -84% | -$7.86M |
|
1942
Shenandoah Telecom
SHEN
$680M
| $1.51M | ﹤0.01% |
110,225
+59,817
| +119% | +$759K |
|
|
SPR
1943
DELISTED
Spirit AeroSystems
SPR
| $1.5M | ﹤0.01% |
39,400
| – | – |
|
|
DCBO
1944
Docebo
DCBO
$614M
| $1.49M | ﹤0.01% |
51,644
+28,953
| +128% | +$821K |
|
1945
StoneX
SNEX
$8.4B
| $1.49M | ﹤0.01% |
+36,882
| New | +$1.39M |
|
|
BAND
1946
Bandwidth Inc
BAND
$1.5B
| $1.49M | ﹤0.01% |
93,889
+82,312
| +711% | +$1.12M |
|
|
FARO
1947
DELISTED
Faro Technologies
FARO
| $1.49M | ﹤0.01% |
33,965
+14,141
| +71% | +$517K |
|
1948
Absci
ABSI
$1.65B
| $1.49M | ﹤0.01% |
580,438
+129,339
| +29% | +$364K |
|
1949
First Trust Nasdaq Bank ETF
FTXO
$304M
| $1.49M | ﹤0.01% |
+45,100
| New | +$1.36M |
|
1950
NET Power
NPWR
$173M
| $1.48M | ﹤0.01% |
600,962
+528,755
| +732% | +$1.11M |
|
Similar funds
John Overdeck's Q2 2025 Portfolio in Review
As of Q2 2025, John Overdeck held 3,681 positions worth $56.5B, up 21% from $46.8B the previous quarter. Its ten largest holdings account for 7.7% of the portfolio.
John Overdeck deployed $2.96B of net new capital in Q2 2025, opening 509 new positions and adding to 1,200 existing holdings. Its largest new stake was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
By sector, the portfolio is most concentrated in Technology at 17% of assets, down from 18% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was Broadcom, an estimated $338M trimmed.
- John Overdeck's largest Q2 2025 buy was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
- John Overdeck added most to UnitedHealth in Q2 2025, an estimated $286M increase.
- John Overdeck's biggest Q2 2025 reduction was Broadcom, cutting an estimated $338M.
- John Overdeck fully exited State Street Utilities Select Sector SPDR ETF in Q2 2025, selling an estimated $134M.
- John Overdeck's ten largest holdings make up 7.7% of its $56.5B portfolio in Q2 2025.
- John Overdeck opened 509 new positions and closed 531 in Q2 2025.
- John Overdeck's portfolio value rose 21% quarter-over-quarter to $56.5B.
Based on Two Sigma Investments's 13F filing for Q2 2025, filed 14 Aug 2025.