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 | |
|---|---|---|---|---|---|---|
301
CALL
Delta Air Lines
DAL
$60.1B
| $94.1M | 0.03% |
1,356,600
-16,100
| -1% | -$1.01M |
|
302
PUT
Vistra
VST
$47.4B
| $93.9M | 0.03% |
581,800
+30,000
| +5% | +$5.46M |
|
303
PUT
United Parcel Service
UPS
$88.9B
| $93.4M | 0.03% |
941,700
-145,100
| -13% | -$13.6M |
|
304
PUT
Regeneron Pharmaceuticals
REGN
$80.8B
| $93.3M | 0.03% |
120,900
+900
| +0.8% | +$611K |
|
305
PUT
Constellation Energy
CEG
$95.6B
| $92.9M | 0.03% |
263,000
-15,000
| -5% | -$5.45M |
|
306
PUT
Seagate
STX
$184B
| $92.8M | 0.03% |
337,100
+54,600
| +19% | +$14.2M |
|
307
PUT
Cloudflare
NET
$107B
| $92.8M | 0.03% |
470,800
+15,700
| +3% | +$3.32M |
|
308
PUT
Datadog
DDOG
$84B
| $92.6M | 0.03% |
681,300
-412,700
| -38% | -$65.2M |
|
309
CALL
Rivian
RIVN
$23.2B
| $92M | 0.03% |
4,670,100
+605,600
| +15% | +$9.61M |
|
310
CALL
General Motors
GM
$76.8B
| $91.9M | 0.03% |
1,129,700
+123,000
| +12% | +$8.67M |
|
311
CALL
Roku
ROKU
$22.7B
| $91.8M | 0.03% |
846,000
-5,300
| -0.6% | -$538K |
|
312
CALL
eBay
EBAY
$49.8B
| $91.2M | 0.03% |
1,047,100
+92,500
| +10% | +$8.01M |
|
313
CALL
AbbVie
ABBV
$435B
| $90.9M | 0.03% |
397,800
-142,300
| -26% | -$32.4M |
|
314
CALL
Blackrock
BLK
$176B
| $89.7M | 0.03% |
+83,800
| New | +$91.6M |
|
315
CALL
GameStop
GME
$8.6B
| $89.6M | 0.03% |
4,462,300
+1,088,800
| +32% | +$24.4M |
|
316
PUT
Texas Instruments
TXN
$261B
| $89.5M | 0.03% |
515,800
-24,400
| -5% | -$4.18M |
|
317
PUT
TransDigm Group
TDG
$67.7B
| $89.4M | 0.03% |
67,200
+56,000
| +500% | +$73.4M |
|
|
318
PUT
Delta Air Lines
DAL
$60.1B
| $89.3M | 0.03% |
1,286,200
-45,900
| -3% | -$2.87M |
|
319
CALL
Humana
HUM
$46.2B
| $89M | 0.03% |
347,600
-93,200
| -21% | -$24.4M |
|
320
CALL
Trade Desk
TTD
$6.49B
| $88.8M | 0.03% |
2,340,400
-465,300
| -17% | -$20.6M |
|
321
PUT
Royal Caribbean
RCL
$85.6B
| $88.7M | 0.03% |
318,000
-63,100
| -17% | -$17.8M |
|
322
CALL
Lowe's Companies
LOW
$125B
| $88.6M | 0.03% |
367,500
+56,000
| +18% | +$13.4M |
|
323
CALL
iShares Morningstar Value ETF
ILCV
$1.35B
| $88.4M | 0.03% |
1,058,000
+101,100
| +11% | +$9.35M |
|
324
PUT
RTX Corp
RTX
$301B
| $87.9M | 0.03% |
479,100
+135,600
| +39% | +$23.6M |
|
325
TSMC
TSM
$2.18T
| $87.8M | 0.03% |
288,944
+275,423
| +2,037% | +$80.8M |
|
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.