Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ITCI
351
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $581K | 0.02% |
36,852
+5,638
| +18% | +$88.9K |
|
352
Omeros
OMER
$284M
| $580K | 0.02% |
26,837
+25,079
| +1,427% | +$542K |
|
353
Ferrari
RACE
$87.1B
| $580K | 0.02% |
5,258
-12,147
| -70% | -$1.34M |
|
354
Expeditors International
EXPD
$16.4B
| $577K | 0.02% |
+9,653
| New | +$577K |
|
355
Public Storage
PSA
$52.2B
| $576K | 0.02% |
+2,692
| New | +$576K |
|
356
WIX.com
WIX
$8.52B
| $576K | 0.02% |
8,019
+405
| +5% | +$29.1K |
|
|
MLNX
357
DELISTED
Mellanox Technologies, Ltd.
MLNX
| $576K | 0.02% |
+12,233
| New | +$576K |
|
358
JB Hunt Transport Services
JBHT
$13.9B
| $574K | 0.02% |
5,169
+1,005
| +24% | +$112K |
|
359
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.49B
| $570K | 0.02% |
+14,932
| New | +$570K |
|
360
Suncor Energy
SU
$48.5B
| $570K | 0.02% |
16,274
+14,976
| +1,154% | +$525K |
|
|
VIAB
361
DELISTED
Viacom Inc. Class B
VIAB
| $568K | 0.02% |
20,429
+11,337
| +125% | +$315K |
|
362
Transocean
RIG
$2.9B
| $567K | 0.02% |
52,778
+35,432
| +204% | +$381K |
|
363
Baker Hughes
BKR
$44.9B
| $565K | 0.02% |
+15,451
| New | +$565K |
|
364
Ameriprise Financial
AMP
$46.1B
| $564K | 0.02% |
+3,801
| New | +$564K |
|
365
ProShares Ultra NASDAQ Biotechnology
BIB
$57.5M
| $560K | 0.02% |
+9,149
| New | +$560K |
|
|
EGN
366
DELISTED
Energen
EGN
| $560K | 0.02% |
10,252
-11,737
| -53% | -$641K |
|
367
Textron
TXT
$14.5B
| $559K | 0.02% |
+10,390
| New | +$559K |
|
368
Philips
PHG
$26.5B
| $556K | 0.02% |
17,152
-3,937
| -19% | -$128K |
|
369
Tenaris
TS
$18.2B
| $552K | 0.02% |
19,524
+7,395
| +61% | +$209K |
|
|
GGP
370
DELISTED
GGP Inc.
GGP
| $548K | 0.02% |
26,431
-31,047
| -54% | -$644K |
|
371
Star Bulk Carriers
SBLK
$2.21B
| $547K | 0.02% |
56,385
+14,121
| +33% | +$137K |
|
372
Bath & Body Works
BBWI
$6.06B
| $546K | 0.02% |
16,246
+4,850
| +43% | +$163K |
|
373
Vanguard FTSE Europe ETF
VGK
$26.9B
| $546K | 0.02% |
9,371
+7,154
| +323% | +$417K |
|
374
Cleveland-Cliffs
CLF
$5.63B
| $543K | 0.02% |
76,049
-24,672
| -24% | -$176K |
|
|
HZNP
375
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $541K | 0.02% |
42,718
+17,341
| +68% | +$220K |
|