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 | Technology | 0.56% |
| 2 | Consumer Discretionary | 0.3% |
| 3 | Communication Services | 0.16% |
| 4 | Financials | 0.13% |
| 5 | Industrials | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2351
Magnite
MGNI
$3.46B
| $2.16M | ﹤0.01% |
+133,096
| New | +$2.21M |
|
2352
BJs Wholesale Club
BJ
$12B
| $2.16M | ﹤0.01% |
23,982
+498
| +2% | +$45.7K |
|
2353
CALL
Flowserve
FLS
$10.2B
| $2.16M | ﹤0.01% |
31,100
-9,500
| -23% | -$611K |
|
2354
Ramaco Resources Class A
METC
$680M
| $2.16M | ﹤0.01% |
119,854
+88,666
| +284% | +$2.33M |
|
2355
CALL
Weyerhaeuser
WY
$17.8B
| $2.15M | ﹤0.01% |
90,800
+22,300
| +33% | +$516K |
|
2356
CALL
Butterfly Network
BFLY
$2.46B
| $2.15M | ﹤0.01% |
565,100
+368,600
| +188% | +$1M |
|
2357
NuScale Power
SMR
$3.89B
| $2.15M | ﹤0.01% |
151,524
+101,339
| +202% | +$2.9M |
|
2358
CALL
Liquidia Corp
LQDA
$7.47B
| $2.14M | ﹤0.01% |
+62,100
| New | +$1.77M |
|
2359
Direxion Daily Semiconductor Bear 3X ETF
SOXS
$1.39B
| $2.14M | ﹤0.01% |
3,418
+850
| +33% | +$624K |
|
2360
PUT
Gold Fields
GFI
$36.8B
| $2.14M | ﹤0.01% |
49,000
+18,000
| +58% | +$752K |
|
2361
CALL
Bruker
BRKR
$8.81B
| $2.14M | ﹤0.01% |
45,400
+22,600
| +99% | +$955K |
|
2362
PUT
Axsome Therapeutics
AXSM
$11.4B
| $2.14M | ﹤0.01% |
11,700
+1,300
| +13% | +$181K |
|
2363
CALL
Shoals Technologies Group
SHLS
$1.44B
| $2.14M | ﹤0.01% |
251,200
+60,000
| +31% | +$539K |
|
2364
PUT
Corebridge Financial
CRBG
$14.9B
| $2.13M | ﹤0.01% |
70,700
+59,000
| +504% | +$1.81M |
|
2365
PUT
Huntington Bancshares
HBAN
$35.9B
| $2.13M | ﹤0.01% |
122,600
+2,200
| +2% | +$36.1K |
|
2366
PUT
JPMorgan Inflation Managed Bond ETF
JCPI
$869M
| $2.12M | ﹤0.01% |
36,400
-3,400
| -9% | -$165K |
|
2367
CALL
ProShares Ultra Bitcoin ETF
BITU
$342M
| $2.11M | ﹤0.01% |
95,700
+77,500
| +426% | +$3.02M |
|
2368
CALL
XP
XP
$8B
| $2.11M | ﹤0.01% |
129,000
-141,000
| -52% | -$2.48M |
|
2369
CALL
Amer Sports
AS
$19.5B
| $2.11M | ﹤0.01% |
56,500
-25,800
| -31% | -$885K |
|
2370
PUT
ScottsMiracle-Gro
SMG
$3.59B
| $2.11M | ﹤0.01% |
36,100
+3,700
| +11% | +$208K |
|
2371
ProShares Short S&P500
SH
$845M
| $2.1M | ﹤0.01% |
+58,354
| New | +$2.14M |
|
2372
CALL
iPath Series B S&P 500 VIX Mid-Term Futures ETN
VXZ
$30.5M
| $2.1M | ﹤0.01% |
39,300
+9,800
| +33% | +$550K |
|
2373
PUT
Banc of California
BANC
$3.1B
| $2.1M | ﹤0.01% |
108,900
+12,500
| +13% | +$224K |
|
|
VG
2374
PUT
Venture Global Inc
VG
$34B
| $2.1M | ﹤0.01% |
+308,000
| New | +$2.57M |
|
2375
CALL
Vanguard World Funds Extended Duration ETF
EDV
$3.47B
| $2.1M | ﹤0.01% |
32,300
+9,200
| +40% | +$626K |
|
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 Technology at 0.56% of assets, up from 0.33% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- 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.