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 | |
|---|---|---|---|---|---|---|
1301
Planet Labs
PL
$7.69B
| $4.03M | 0.01% |
+660,740
| New | +$2.7M |
|
1302
Invesco S&P SmallCap Value with Momentum ETF
XSVM
$656M
| $4.03M | 0.01% |
77,500
-37,300
| -32% | -$1.84M |
|
|
PSTL
1303
Postal Realty Trust
PSTL
$696M
| $4.03M | 0.01% |
273,364
+67,491
| +33% | +$926K |
|
|
FIGXU
1304
FIGX Capital Acquisition Corp Units
FIGXU
| $3.98M | 0.01% |
+397,395
| New | +$3.98M |
|
1305
Paymentus
PAY
$5.03B
| $3.98M | 0.01% |
121,452
+66,006
| +119% | +$2.21M |
|
1306
Brady Corp
BRC
$4.45B
| $3.98M | 0.01% |
58,511
+22,602
| +63% | +$1.57M |
|
1307
Voya Financial
VOYA
$8.98B
| $3.97M | 0.01% |
55,984
-222,713
| -80% | -$14.3M |
|
1308
Dover
DOV
$27.4B
| $3.97M | 0.01% |
21,685
+7,946
| +58% | +$1.38M |
|
|
KC
1309
Kingsoft Cloud Holdings
KC
$3.12B
| $3.96M | 0.01% |
316,472
-69,800
| -18% | -$903K |
|
1310
Marten Transport
MRTN
$1.2B
| $3.96M | 0.01% |
305,017
+23,763
| +8% | +$313K |
|
1311
Okta
OKTA
$22.8B
| $3.96M | 0.01% |
39,579
-212,031
| -84% | -$22.6M |
|
|
PGRE
1312
DELISTED
Paramount Group
PGRE
| $3.95M | 0.01% |
647,216
-66,158
| -9% | -$345K |
|
1313
Southside Bancshares
SBSI
$956M
| $3.95M | 0.01% |
134,141
+6,137
| +5% | +$174K |
|
1314
SPS Commerce
SPSC
$2.93B
| $3.95M | 0.01% |
+29,000
| New | +$4.02M |
|
1315
Cintas
CTAS
$83B
| $3.95M | 0.01% |
17,708
-34,702
| -66% | -$7.47M |
|
1316
American International
AIG
$40.5B
| $3.94M | 0.01% |
46,082
-215,078
| -82% | -$17.9M |
|
1317
Yum! Brands
YUM
$42.9B
| $3.94M | 0.01% |
26,609
-663,104
| -96% | -$96.8M |
|
|
MACI
1318
Melar Acquisition Corp I
MACI
$237M
| $3.94M | 0.01% |
375,000
| – | – |
|
1319
1st Source
SRCE
$2.07B
| $3.93M | 0.01% |
63,279
+8,107
| +15% | +$482K |
|
1320
Danaos Corp
DAC
$2.74B
| $3.92M | 0.01% |
45,497
+22,402
| +97% | +$1.84M |
|
1321
Harmony Gold Mining
HMY
$14.3B
| $3.92M | 0.01% |
280,733
+72,260
| +35% | +$1.09M |
|
1322
Bath & Body Works
BBWI
$3.86B
| $3.92M | 0.01% |
+130,726
| New | +$3.83M |
|
1323
CorMedix
CRMD
$645M
| $3.9M | 0.01% |
316,963
+289,013
| +1,034% | +$3.19M |
|
1324
Zebra Technologies
ZBRA
$17.2B
| $3.9M | 0.01% |
+12,660
| New | +$3.44M |
|
1325
Archrock
AROC
$5.38B
| $3.9M | 0.01% |
156,933
+118,231
| +305% | +$2.9M |
|
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.