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 | |
|---|---|---|---|---|---|---|
251
PUT
Take-Two Interactive
TTWO
$46.1B
| $123M | 0.04% |
478,600
+235,600
| +97% | +$58.7M |
|
252
PUT
Target
TGT
$68B
| $122M | 0.04% |
1,249,800
-429,200
| -26% | -$39.6M |
|
253
CALL
Unity
U
$18.9B
| $122M | 0.04% |
2,760,000
-616,700
| -18% | -$25.1M |
|
254
CALL
Astera Labs
ALAB
$58B
| $122M | 0.04% |
732,700
+32,200
| +5% | +$5.39M |
|
255
PUT
Thermo Fisher Scientific
TMO
$220B
| $122M | 0.04% |
210,000
-30,600
| -13% | -$17.3M |
|
|
NVO
256
CALL
Novo Nordisk
NVO
$209B
| $122M | 0.04% |
2,388,600
+354,600
| +17% | +$18.1M |
|
257
CALL
Wynn Resorts
WYNN
$10.6B
| $119M | 0.04% |
987,700
+47,500
| +5% | +$5.88M |
|
258
CALL
State Street Financial Select Sector SPDR ETF
XLF
$58.2B
| $118M | 0.04% |
2,146,900
+440,300
| +26% | +$23.5M |
|
259
CALL
United Airlines
UAL
$42.1B
| $116M | 0.04% |
1,038,800
-359,200
| -26% | -$36.3M |
|
260
PUT
Blackrock
BLK
$176B
| $116M | 0.04% |
+108,200
| New | +$118M |
|
261
PUT
Cisco
CSCO
$479B
| $116M | 0.04% |
1,502,700
+31,500
| +2% | +$2.34M |
|
262
PUT
Rocket Lab Corp
RKLB
$51.8B
| $115M | 0.04% |
+1,652,300
| New | +$94.7M |
|
263
CALL
Texas Instruments
TXN
$261B
| $115M | 0.04% |
663,100
+160,200
| +32% | +$27.4M |
|
264
CALL
Morgan Stanley
MS
$340B
| $115M | 0.04% |
647,800
-600
| -0.1% | -$100K |
|
265
CALL
Datadog
DDOG
$84B
| $114M | 0.04% |
838,500
-164,100
| -16% | -$25.9M |
|
266
CALL
Constellation Energy
CEG
$95.6B
| $114M | 0.04% |
322,400
+71,200
| +28% | +$25.9M |
|
267
CALL
RTX Corp
RTX
$301B
| $114M | 0.04% |
621,000
+26,700
| +4% | +$4.64M |
|
268
PUT
United Rentals
URI
$72.4B
| $114M | 0.04% |
140,500
+56,200
| +67% | +$48.8M |
|
269
CALL
AutoZone
AZO
$51.1B
| $113M | 0.04% |
33,400
-7,500
| -18% | -$28.3M |
|
270
CALL
Deere & Co
DE
$168B
| $113M | 0.04% |
243,300
+12,000
| +5% | +$5.63M |
|
|
271
PUT
Astera Labs
ALAB
$58B
| $113M | 0.04% |
676,300
-107,400
| -14% | -$18M |
|
|
UCD
272
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $111M | 0.04% |
941,300
+390,600
| +71% | +$46.1M |
|
273
CALL
Roblox
RBLX
$27B
| $110M | 0.04% |
1,361,300
-51,000
| -4% | -$5.41M |
|
|
274
PUT
Roblox
RBLX
$27B
| $109M | 0.04% |
1,343,400
-157,500
| -10% | -$16.7M |
|
275
CALL
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$148M
| $109M | 0.04% |
1,901,500
+239,000
| +14% | +$5.38M |
|
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.