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 | |
|---|---|---|---|---|---|---|
|
CEPT
951
DELISTED
Cantor Equity Partners II
CEPT
| $7.33M | 0.01% |
+664,999
| New | +$7.51M |
|
|
TVA
952
Texas Ventures Acquisition III Corp
TVA
$316M
| $7.32M | 0.01% |
+725,000
| New | +$7.28M |
|
|
CHAC
953
DELISTED
Crane Harbor Acquisition Corp
CHAC
| $7.3M | 0.01% |
+725,000
| New | +$7.24M |
|
954
Principal Exchange-Traded Funds Principal US Mega-Cap ETF
USMC
$5.06B
| $7.28M | 0.01% |
116,400
+97,000
| +500% | +$5.64M |
|
955
Perdoceo Education
PRDO
$2.07B
| $7.28M | 0.01% |
222,673
+168,408
| +310% | +$4.99M |
|
|
GES
956
DELISTED
Guess Inc
GES
| $7.26M | 0.01% |
600,100
-131,461
| -18% | -$1.47M |
|
957
Hilltop Holdings
HTH
$2.22B
| $7.24M | 0.01% |
238,661
+36,953
| +18% | +$1.1M |
|
|
CRAQ
958
Cal Redwood Acquisition Corp
CRAQ
| $7.23M | 0.01% |
+725,000
| New | +$7.24M |
|
959
Capitol Federal Financial
CFFN
$1.05B
| $7.19M | 0.01% |
1,178,541
+201,310
| +21% | +$1.14M |
|
|
SOUL
960
Soulpower Acquisition Corp
SOUL
$355M
| $7.15M | 0.01% |
+712,291
| New | +$7.1M |
|
961
Rigetti Computing
RGTI
$5.46B
| $7.13M | 0.01% |
601,081
+388,842
| +183% | +$4.1M |
|
|
PSIX
962
Power Solutions International
PSIX
$807M
| $7.12M | 0.01% |
110,072
+55,811
| +103% | +$2.07M |
|
963
RLI Corp
RLI
$6.11B
| $7.12M | 0.01% |
98,520
+90,845
| +1,184% | +$6.81M |
|
|
B
964
Barrick Mining
B
$79.3B
| $7.09M | 0.01% |
340,468
-1,544,275
| -82% | -$30.2M |
|
965
Winnebago Industries
WGO
$909M
| $7.08M | 0.01% |
244,110
+39,608
| +19% | +$1.3M |
|
|
VLOS
966
Velos Acquisition I Corp
VLOS
$252M
| $7.06M | 0.01% |
625,000
| – | – |
|
|
APLS
967
DELISTED
Apellis Pharmaceuticals
APLS
| $7.04M | 0.01% |
406,913
+144,009
| +55% | +$2.67M |
|
968
Fidelity MSCI Financials Index ETF
FNCL
$2.43B
| $7.03M | 0.01% |
+94,900
| New | +$6.58M |
|
969
ThredUp
TDUP
$369M
| $7.01M | 0.01% |
935,774
+550,276
| +143% | +$3.23M |
|
970
Motley Fool 100 Index ETF
TMFC
$2.06B
| $6.99M | 0.01% |
+108,400
| New | +$6.36M |
|
971
PUT
Bitdeer Technologies
BTDR
$2.97B
| $6.98M | 0.01% |
607,900
| – | – |
|
972
Euronet Worldwide
EEFT
$2.63B
| $6.95M | 0.01% |
68,589
-9,365
| -12% | -$968K |
|
973
Kymera Therapeutics
KYMR
$10.1B
| $6.95M | 0.01% |
159,163
+11,543
| +8% | +$397K |
|
|
ARR
974
Armour Residential REIT
ARR
$2.32B
| $6.94M | 0.01% |
413,003
+217,932
| +112% | +$3.5M |
|
975
Baytex Energy
BTE
$3.3B
| $6.93M | 0.01% |
3,869,550
-6,090,344
| -61% | -$10.7M |
|
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.