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 | |
|---|---|---|---|---|---|---|
276
Invesco S&P 500 Momentum ETF
SPMO
$21.8B
| $49.2M | 0.09% |
+437,400
| New | +$43.7M |
|
277
Dell
DELL
$286B
| $49.1M | 0.09% |
400,878
+241,084
| +151% | +$24.6M |
|
|
CRCL
278
Circle Internet Group
CRCL
$22.3B
| $48.9M | 0.09% |
+269,600
| New | +$43.9M |
|
279
Oracle
ORCL
$422B
| $48.8M | 0.09% |
223,149
-628,916
| -74% | -$102M |
|
280
Linde
LIN
$225B
| $48.7M | 0.09% |
103,871
-325,854
| -76% | -$149M |
|
281
RH
RH
$2.9B
| $48.2M | 0.09% |
254,939
+244,866
| +2,431% | +$45.5M |
|
282
PUT
Lumentum
LITE
$77.7B
| $48.2M | 0.09% |
506,800
-259,200
| -34% | -$18.4M |
|
283
Transocean
RIG
$6.61B
| $48.1M | 0.09% |
18,571,883
+4,901,384
| +36% | +$12.6M |
|
284
FMC
FMC
$1.38B
| $47.9M | 0.08% |
1,147,025
-710,810
| -38% | -$28.2M |
|
285
AbbVie
ABBV
$468B
| $47.5M | 0.08% |
255,876
+243,758
| +2,012% | +$45.3M |
|
286
Eagle Materials
EXP
$6.35B
| $47.4M | 0.08% |
234,679
+171,855
| +274% | +$37M |
|
287
ODDITY Tech
ODD
$610M
| $47.1M | 0.08% |
624,685
+554,042
| +784% | +$33.8M |
|
288
Core Scientific
CORZ
$5.72B
| $46.9M | 0.08% |
2,749,316
+1,125,927
| +69% | +$11.3M |
|
289
iShares Russell 1000 ETF
IWB
$49.3B
| $46.7M | 0.08% |
137,500
-184,000
| -57% | -$57.8M |
|
290
Rocket Companies
RKT
$39.4B
| $46.3M | 0.08% |
3,267,488
+1,796,702
| +122% | +$23.3M |
|
291
Idacorp
IDA
$7.94B
| $46.2M | 0.08% |
400,165
+244,884
| +158% | +$28.4M |
|
|
FITB
292
Fifth Third Bancorp
FITB
$49.7B
| $45.8M | 0.08% |
1,114,454
+715,436
| +179% | +$26.8M |
|
293
Pan American Silver
PAAS
$22B
| $45.7M | 0.08% |
1,609,750
+1,505,663
| +1,447% | +$39M |
|
294
Invesco S&P 500 Quality ETF
SPHQ
$19.7B
| $45.4M | 0.08% |
636,600
+385,400
| +153% | +$26.1M |
|
295
State Street SPDR S&P Insurance ETF
KIE
$704M
| $45.3M | 0.08% |
+758,300
| New | +$44.1M |
|
296
CarMax
KMX
$8.82B
| $45.1M | 0.08% |
670,601
+37,976
| +6% | +$2.55M |
|
297
MongoDB
MDB
$34.7B
| $44.9M | 0.08% |
213,789
-25,981
| -11% | -$4.8M |
|
298
Vanguard Morningstar Large-Cap ETF
VV
$54B
| $44.6M | 0.08% |
+156,400
| New | +$41.2M |
|
299
TC Energy
TRP
$64.6B
| $44.3M | 0.08% |
907,868
-526,959
| -37% | -$25.9M |
|
300
Ecolab
ECL
$78.9B
| $44.2M | 0.08% |
163,885
-242,376
| -60% | -$61.6M |
|
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.