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 |
iShares Russell 2000 ETF
IWM
|
+$302M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$170M |
| 3 |
Broadcom
AVGO
|
+$164M |
| 4 |
Tesla
TSLA
|
+$158M |
| 5 |
Palantir
PLTR
|
+$109M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Bitcoin Trust
IBIT
|
+$167M |
| 2 |
Applovin
APP
|
+$126M |
| 3 |
JD.com
JD
|
+$103M |
| 4 |
Amazon
AMZN
|
+$97.8M |
| 5 |
Vanguard S&P 500 ETF
VOO
|
+$90.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.48% |
| 2 | Technology | 0.56% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Communication Services | 0.16% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
276
CALL
Block Inc
XYZ
$47B
| $109M | 0.04% |
1,670,300
-199,700
| -11% | -$13.8M |
2018 Q4
28 quarters
|
|
277
CALL
Cloudflare
NET
$105B
| $108M | 0.04% |
545,600
-71,800
| -12% | -$15.2M |
2020 Q3
21 quarters
|
|
278
PUT
Starbucks
SBUX
$110B
| $107M | 0.04% |
1,276,100
+171,200
| +15% | +$14.4M |
2018 Q4
28 quarters
|
|
|
279
Palantir
PLTR
$447B
| $107M | 0.04% |
+601,853
| New | +$109M |
2025 Q4
0 quarters
|
|
280
CALL
Merck
MRK
$363B
| $106M | 0.04% |
1,009,000
+119,700
| +13% | +$11.2M |
2022 Q1
15 quarters
|
|
281
PUT
Lumentum
LITE
$75.7B
| $106M | 0.04% |
287,900
+170,300
| +145% | +$43.7M |
2024 Q3
5 quarters
|
|
282
PUT
EQT Corp
EQT
$34B
| $105M | 0.04% |
1,964,600
+1,569,300
| +397% | +$88.2M |
2022 Q4
12 quarters
|
|
283
CALL
Celestica
CLS
$38.5B
| $105M | 0.04% |
354,500
+5,600
| +2% | +$1.69M |
2024 Q1
7 quarters
|
|
284
PUT
State Street Health Care Select Sector SPDR ETF
XLV
$45.8B
| $105M | 0.04% |
675,900
+299,700
| +80% | +$44.9M |
2018 Q4
28 quarters
|
|
285
CALL
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$7.15B
| $104M | 0.04% |
835,100
+475,800
| +132% | +$13.9M |
2021 Q4
16 quarters
|
|
286
PUT
Dollar General
DG
$29.7B
| $104M | 0.04% |
784,500
+423,300
| +117% | +$47.2M |
2018 Q4
28 quarters
|
|
287
PUT
Eaton
ETN
$153B
| $104M | 0.04% |
326,300
+85,800
| +36% | +$30.4M |
2023 Q4
8 quarters
|
|
288
PUT
Cameco
CCJ
$35.5B
| $103M | 0.04% |
1,129,800
+722,500
| +177% | +$65.1M |
2021 Q3
17 quarters
|
|
289
CALL
Coherent
COHR
$46.3B
| $103M | 0.04% |
556,500
+308,200
| +124% | +$46.1M |
2023 Q3
9 quarters
|
|
290
CALL
FedEx
FDX
$69.3B
| $102M | 0.04% |
354,600
-37,600
| -10% | -$9.87M |
2018 Q4
28 quarters
|
|
291
CALL
Capital One
COF
$123B
| $102M | 0.04% |
421,400
+31,700
| +8% | +$7.06M |
2021 Q3
17 quarters
|
|
292
PUT
Airbnb
ABNB
$102B
| $102M | 0.04% |
750,000
+102,000
| +16% | +$12.7M |
2020 Q4
20 quarters
|
|
293
PUT
Charles Schwab
SCHW
$159B
| $99.5M | 0.04% |
995,400
-122,900
| -11% | -$11.7M |
2020 Q4
20 quarters
|
|
294
PUT
Constellation Brands
STZ
$22.2B
| $98.9M | 0.04% |
717,100
-228,500
| -24% | -$31.4M |
2021 Q2
18 quarters
|
|
295
CALL
Vistra
VST
$51.5B
| $98.1M | 0.04% |
608,100
-29,900
| -5% | -$5.45M |
2024 Q1
7 quarters
|
|
296
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$305M
| $97.7M | 0.04% |
1,743,150
+747,200
| +75% | +$45.7M |
2022 Q2
14 quarters
|
|
297
CALL
Seagate
STX
$148B
| $97.7M | 0.04% |
354,900
-83,800
| -19% | -$21.7M |
2022 Q3
13 quarters
|
|
298
CALL
RH
RH
$2.18B
| $96.5M | 0.04% |
538,800
+133,000
| +33% | +$22.7M |
2019 Q3
25 quarters
|
|
299
PUT
State Street Financial Select Sector SPDR ETF
XLF
$51.5B
| $96.3M | 0.04% |
1,758,900
-104,400
| -6% | -$5.56M |
2018 Q4
28 quarters
|
|
300
CALL
ConocoPhillips
COP
$175B
| $94.6M | 0.03% |
1,010,600
+240,200
| +31% | +$21.7M |
2018 Q4
28 quarters
|
|
Similar funds
IMC Chicago's Q4 2025 Portfolio in Review
As of Q4 2025, IMC Chicago held 4,538 positions worth $275B, up 0.14% from $275B the previous quarter. Its ten largest holdings account for 36% of the portfolio.
IMC Chicago's Q4 2025 filing shows 985 new, 1,665 increased, 1,358 reduced and 525 closed positions. Its largest new stake was Palantir: 601,853 shares worth $107M. The largest sale was iShares Bitcoin Trust, an estimated $167M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- IMC Chicago's largest Q4 2025 buy was Palantir: 601,853 shares worth $107M.
- IMC Chicago added most to iShares Russell 2000 ETF in Q4 2025, an estimated $302M increase.
- IMC Chicago's biggest Q4 2025 reduction was iShares Bitcoin Trust, cutting an estimated $167M.
- IMC Chicago fully exited Amazon in Q4 2025, selling an estimated $97.8M.
- IMC Chicago's ten largest holdings make up 36% of its $275B portfolio in Q4 2025.
- IMC Chicago opened 985 new positions and closed 525 in Q4 2025.
- IMC Chicago's portfolio value rose 0.14% quarter-over-quarter to $275B.
Based on IMC Chicago's 13F filing for Q4 2025, filed 29 Jan 2026.