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 | |
|---|---|---|---|---|---|---|
1751
Ambarella
AMBA
$3.09B
| $2.03M | ﹤0.01% |
30,756
+6,588
| +27% | +$349K |
|
1752
VictoryShares WestEnd US Sector ETF
MODL
$1.08B
| $2.03M | ﹤0.01% |
+47,000
| New | +$1.87M |
|
1753
Fortune Brands Innovations
FBIN
$5.43B
| $2.02M | ﹤0.01% |
39,249
-327,698
| -89% | -$17.1M |
|
1754
Compass Diversified
CODI
$867M
| $2.02M | ﹤0.01% |
320,973
+284,317
| +776% | +$3.16M |
|
1755
Thomson Reuters
TRI
$45.5B
| $2.02M | ﹤0.01% |
9,866
-308,108
| -97% | -$58.7M |
|
1756
Radware
RDWR
$1.17B
| $2.01M | ﹤0.01% |
68,335
-32,783
| -32% | -$776K |
|
1757
Omeros
OMER
$1.39B
| $2.01M | ﹤0.01% |
670,219
+564,580
| +534% | +$2.81M |
|
1758
MDU Resources
MDU
$4.21B
| $2.01M | ﹤0.01% |
+120,467
| New | +$2.03M |
|
1759
Miller Industries
MLR
$645M
| $2M | ﹤0.01% |
45,043
-32,245
| -42% | -$1.4M |
|
1760
Best Buy
BBY
$18B
| $2M | ﹤0.01% |
29,740
+6,140
| +26% | +$417K |
|
|
AXIA
1761
DELISTED
AXIA Energia
AXIA
| $1.99M | ﹤0.01% |
338,622
-14,720
| -4% | -$86K |
|
|
AGNT
1762
AGNT Inc
AGNT
$757M
| $1.99M | ﹤0.01% |
218,277
+74,107
| +51% | +$647K |
|
1763
AB InBev
BUD
$155B
| $1.99M | ﹤0.01% |
28,900
| – | – |
|
1764
Hanover Insurance
THG
$7.93B
| $1.98M | ﹤0.01% |
11,668
-8,764
| -43% | -$1.46M |
|
1765
Ironwood Pharmaceuticals
IRWD
$719M
| $1.97M | ﹤0.01% |
2,750,573
+1,523,377
| +124% | +$1.2M |
|
1766
Cirrus Logic
CRUS
$5.55B
| $1.97M | ﹤0.01% |
18,919
-9,591
| -34% | -$940K |
|
|
PELI
1767
DELISTED
Pelican Acquisition Corp
PELI
| $1.97M | ﹤0.01% |
+196,645
| New | +$1.96M |
|
1768
BGC Group
BGC
$5.66B
| $1.97M | ﹤0.01% |
192,758
+158,290
| +459% | +$1.45M |
|
1769
4D Molecular Therapeutics
FDMT
$872M
| $1.97M | ﹤0.01% |
531,163
+69,706
| +15% | +$245K |
|
1770
Eaton Vance Tax-Advantaged Dividend Income Fund
EVT
$2.17B
| $1.97M | ﹤0.01% |
+81,682
| New | +$1.86M |
|
1771
Ecopetrol
EC
$34.7B
| $1.97M | ﹤0.01% |
222,160
+46,181
| +26% | +$409K |
|
1772
First Trust Capital Strength ETF
FTCS
$8.06B
| $1.96M | ﹤0.01% |
+21,600
| New | +$1.92M |
|
1773
Rentokil
RTO
$12B
| $1.96M | ﹤0.01% |
81,733
-4,100
| -5% | -$95.1K |
|
1774
Synaptics
SYNA
$3.68B
| $1.96M | ﹤0.01% |
30,262
-59,681
| -66% | -$3.51M |
|
1775
Ferrovial N.V. Ordinary Shares
FER
$45.5B
| $1.96M | ﹤0.01% |
36,929
+19,357
| +110% | +$943K |
|
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.