IMC Chicago Portfolio holdings
IMC-Chicago, a key arm of IMC Trading founded in 1989 by Rob Defares and René Schelvis in Amsterdam, is a proprietary trading firm and market maker headquartered in Chicago since opening its first overseas office there in 2000. Employing over 650 of IMC’s 1,600+ global workforce, it operates at the heart of North America’s financial hub, trading equities, options, futures, and other derivatives on major exchanges like the Chicago Mercantile Exchange (CME) and Chicago Board Options Exchange (CBOE). Known for its technology-driven approach, IMC-Chicago leverages advanced algorithms and low-latency systems to provide liquidity across more than 100 global venues, evolving from a trading outfit with strong tech to a tech company that trades. Under CEO Rob Defares, the firm emphasizes innovation, quantitative strategies, and a collaborative culture, making it a powerhouse in the U.S. derivatives market.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$203M |
| 2 |
JD.com
JD
|
+$105M |
| 3 |
Boeing
BA
|
+$105M |
| 4 |
Applovin
APP
|
+$93.6M |
| 5 |
Netflix
NFLX
|
+$81.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$167M |
| 2 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$146M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$135M |
| 4 |
Pinduoduo
PDD
|
+$128M |
| 5 |
Palantir
PLTR
|
+$108M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.46% |
| 2 | Consumer Discretionary | 0.39% |
| 3 | Technology | 0.33% |
| 4 | Communication Services | 0.22% |
| 5 | Industrials | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
251
PUT
State Street Technology Select Sector SPDR ETF
XLK
$125B
| $114M | 0.04% |
808,200
+59,800
| +8% | +$7.92M |
2018 Q4
27 quarters
|
|
252
PUT
ExxonMobil
XOM
$718B
| $113M | 0.04% |
1,004,800
-16,300
| -2% | -$1.81M |
2018 Q4
27 quarters
|
|
253
CALL
Novo Nordisk
NVO
$173B
| $113M | 0.04% |
2,034,000
+922,900
| +83% | +$54M |
2023 Q3
8 quarters
|
|
254
PUT
Avis
CAR
$3.88B
| $112M | 0.04% |
695,000
+247,500
| +55% | +$41.7M |
2018 Q4
27 quarters
|
|
255
PUT
United Airlines
UAL
$32.9B
| $111M | 0.04% |
1,149,600
-64,600
| -5% | -$6.21M |
2018 Q4
27 quarters
|
|
256
PUT
Humana
HUM
$51.9B
| $108M | 0.04% |
416,800
+57,500
| +16% | +$15.1M |
2022 Q3
12 quarters
|
|
257
PUT
Vistra
VST
$51.7B
| $108M | 0.04% |
551,800
+6,100
| +1% | +$1.21M |
2024 Q1
6 quarters
|
|
258
CALL
Intuitive Surgical
ISRG
$151B
| $108M | 0.04% |
241,400
+72,100
| +43% | +$34.6M |
2018 Q4
27 quarters
|
|
|
259
CALL
State Street Technology Select Sector SPDR ETF
XLK
$125B
| $107M | 0.04% |
759,200
+29,000
| +4% | +$3.84M |
2018 Q4
27 quarters
|
|
260
PUT
Charles Schwab
SCHW
$163B
| $107M | 0.04% |
1,118,300
+161,400
| +17% | +$15.3M |
2020 Q4
19 quarters
|
|
261
PUT
Hims & Hers Health
HIMS
$6.85B
| $106M | 0.04% |
1,873,300
+49,200
| +3% | +$2.52M |
2024 Q1
6 quarters
|
|
262
CALL
Deere & Co
DE
$175B
| $106M | 0.04% |
231,300
-20,900
| -8% | -$10.3M |
2018 Q4
27 quarters
|
|
263
CALL
Sea Limited
SE
$59.7B
| $106M | 0.04% |
590,500
+96,400
| +20% | +$16.5M |
2020 Q1
22 quarters
|
|
264
PUT
Duolingo
DUOL
$6.97B
| $105M | 0.04% |
326,800
+231,500
| +243% | +$77.4M |
2024 Q1
6 quarters
|
|
265
CALL
KLA
KLAC
$228B
| $105M | 0.04% |
972,000
+350,000
| +56% | +$32.7M |
2022 Q3
12 quarters
|
|
266
PUT
Western Digital
WDC
$133B
| $104M | 0.04% |
864,100
+440,100
| +104% | +$36M |
2018 Q4
27 quarters
|
|
267
CALL
Seagate
STX
$157B
| $104M | 0.04% |
438,700
+199,000
| +83% | +$34M |
2022 Q3
12 quarters
|
|
268
CALL
Morgan Stanley
MS
$286B
| $103M | 0.04% |
648,400
-255,200
| -28% | -$37.7M |
2018 Q4
27 quarters
|
|
269
PUT
Caesars Entertainment
CZR
$5.96B
| $103M | 0.04% |
3,811,300
+2,957,300
| +346% | +$80.1M |
2021 Q2
17 quarters
|
|
270
PUT
Cisco
CSCO
$433B
| $101M | 0.04% |
1,471,200
+434,000
| +42% | +$29.6M |
2018 Q4
27 quarters
|
|
|
271
PUT
State Street Financial Select Sector SPDR ETF
XLF
$51.4B
| $100M | 0.04% |
1,863,300
-727,400
| -28% | -$38.5M |
2018 Q4
27 quarters
|
|
|
272
CALL
Charles Schwab
SCHW
$163B
| $100M | 0.04% |
1,050,700
-187,500
| -15% | -$17.8M |
2020 Q4
19 quarters
|
|
273
CALL
RTX Corp
RTX
$252B
| $99.4M | 0.04% |
594,300
-66,100
| -10% | -$10.3M |
2020 Q2
21 quarters
|
|
274
PUT
Texas Instruments
TXN
$255B
| $99.3M | 0.04% |
540,200
+227,800
| +73% | +$44.5M |
2018 Q4
27 quarters
|
|
275
CALL
United Rentals
URI
$65.2B
| $99M | 0.04% |
103,700
-11,300
| -10% | -$10.1M |
2022 Q4
11 quarters
|
|
Similar funds
IMC Chicago's Q3 2025 Portfolio in Review
As of Q3 2025, IMC Chicago held 4,045 positions worth $275B, up 22% from $225B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
IMC Chicago's Q3 2025 filing shows 783 new, 1,843 increased, 923 reduced and 492 closed positions. Its largest new stake was Netflix: 666,120 shares worth $79.9M. The largest sale was Apple, an estimated $167M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 99% a quarter earlier, followed by Consumer Discretionary and Technology.
- IMC Chicago's largest Q3 2025 buy was Netflix: 666,120 shares worth $79.9M.
- IMC Chicago added most to Invesco QQQ Trust in Q3 2025, an estimated $203M increase.
- IMC Chicago's biggest Q3 2025 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $135M.
- IMC Chicago fully exited Apple in Q3 2025, selling an estimated $167M.
- IMC Chicago's ten largest holdings make up 38% of its $275B portfolio in Q3 2025.
- IMC Chicago opened 783 new positions and closed 492 in Q3 2025.
- IMC Chicago's portfolio value rose 22% quarter-over-quarter to $275B.
Based on IMC Chicago's 13F filing for Q3 2025, filed 4 Nov 2025.