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 | |
|---|---|---|---|---|---|---|
1501
Marathon Digital Holdings
MARA
$3.69B
| $6.87M | ﹤0.01% |
764,611
-151,894
| -17% | -$2.24M |
|
1502
PUT
Cencora
COR
$62B
| $6.86M | ﹤0.01% |
20,300
+6,100
| +43% | +$2.08M |
|
1503
CALL
KE Holdings
BEKE
$19.5B
| $6.83M | ﹤0.01% |
433,200
+78,400
| +22% | +$1.35M |
|
1504
QuantumScape Corp
QS
$3.81B
| $6.83M | ﹤0.01% |
655,171
-116,289
| -15% | -$1.6M |
|
|
FITB
1505
CALL
Fifth Third Bancorp
FITB
$51.8B
| $6.82M | ﹤0.01% |
145,700
+9,000
| +7% | +$396K |
|
1506
CALL
CoStar Group
CSGP
$12.8B
| $6.82M | ﹤0.01% |
101,400
+24,500
| +32% | +$1.74M |
|
1507
CALL
Moody's
MCO
$82.8B
| $6.79M | ﹤0.01% |
+13,300
| New | +$6.49M |
|
1508
CALL
Cenovus Energy
CVE
$54.5B
| $6.78M | ﹤0.01% |
401,000
-220,600
| -35% | -$3.83M |
|
1509
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$7.29B
| $6.78M | ﹤0.01% |
30,732
+20,153
| +191% | +$4.38M |
|
1510
CALL
Deutsche Bank
DB
$71.9B
| $6.78M | ﹤0.01% |
175,800
-15,400
| -8% | -$556K |
|
1511
Boston Scientific
BSX
$73.1B
| $6.78M | ﹤0.01% |
71,090
+51,263
| +259% | +$5.03M |
|
1512
PUT
PACCAR
PCAR
$69.1B
| $6.76M | ﹤0.01% |
61,700
+34,000
| +123% | +$3.48M |
|
1513
CALL
dLocal
DLO
$4.23B
| $6.75M | ﹤0.01% |
477,400
-68,100
| -12% | -$961K |
|
|
VISN
1514
CALL
Vistance Networks Inc
VISN
$2.63B
| $6.74M | ﹤0.01% |
371,800
-56,700
| -13% | -$978K |
|
1515
CALL
Iron Mountain
IRM
$36.2B
| $6.74M | ﹤0.01% |
81,200
+23,400
| +40% | +$2.19M |
|
1516
CALL
Ouster
OUST
$2.84B
| $6.71M | ﹤0.01% |
310,300
+76,700
| +33% | +$2.03M |
|
1517
PUT
Kohl's
KSS
$2.16B
| $6.71M | ﹤0.01% |
328,800
-206,800
| -39% | -$3.88M |
|
1518
PUT
Cintas
CTAS
$81.1B
| $6.7M | ﹤0.01% |
35,600
-14,900
| -30% | -$2.81M |
|
1519
CALL
FirstEnergy
FE
$27.1B
| $6.68M | ﹤0.01% |
149,300
+84,000
| +129% | +$3.86M |
|
1520
Workday
WDAY
$45.5B
| $6.65M | ﹤0.01% |
30,979
+20,838
| +205% | +$4.73M |
|
1521
Roblox
RBLX
$26.5B
| $6.65M | ﹤0.01% |
+82,096
| New | +$8.72M |
|
1522
Kenvue
KVUE
$36.5B
| $6.61M | ﹤0.01% |
382,930
-177,407
| -32% | -$2.9M |
|
1523
CALL
PACS Group
PACS
$7.67B
| $6.58M | ﹤0.01% |
171,500
+135,600
| +378% | +$2.97M |
|
1524
PUT
Crown Castle
CCI
$31.3B
| $6.58M | ﹤0.01% |
74,000
-37,600
| -34% | -$3.46M |
|
1525
PUT
Pagaya Technologies
PGY
$1.8B
| $6.57M | ﹤0.01% |
314,200
+152,500
| +94% | +$3.88M |
|
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.