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 |
Apple
AAPL
|
$32.9M |
| 2 |
Gilead Sciences
GILD
|
$30.1M |
| 3 |
Booking.com
BKNG
|
$29M |
| 4 |
Amazon
AMZN
|
$25.6M |
| 5 |
Baidu
BIDU
|
$16.2M |
Top Sells
Sector Composition
| 1 | Consumer Discretionary | 23.68% |
| 2 | Technology | 19.11% |
| 3 | Healthcare | 14.31% |
| 4 | Energy | 9.3% |
| 5 | Communication Services | 8.24% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
AMC Entertainment Holdings
AMC
$1.41B
| $157K | 0.02% |
+598
| New | +$157K |
|
|
AOL
377
DELISTED
AOL INC COMMON STOCK
AOL
| $155K | 0.02% |
+3,354
| New | +$155K |
|
378
G-III Apparel Group
GIII
$1.12B
| $153K | 0.02% |
+3,020
| New | +$153K |
|
379
SiriusPoint
SPNT
$2.19B
| $152K | 0.02% |
+10,494
| New | +$152K |
|
380
Bank of Montreal
BMO
$90.3B
| $151K | 0.02% |
+2,139
| New | +$151K |
|
|
OKS
381
DELISTED
Oneok Partners LP
OKS
| $151K | 0.02% |
+3,800
| New | +$151K |
|
382
Alcoa
AA
$8.24B
| $150K | 0.02% |
+3,963
| New | +$150K |
|
383
Liberty Broadband Class A
LBRDA
$8.57B
| $149K | 0.02% |
+2,975
| New | +$149K |
|
384
CoreCivic
CXW
$2.11B
| $148K | 0.02% |
+4,086
| New | +$148K |
|
385
Dick's Sporting Goods
DKS
$17.7B
| $148K | 0.02% |
+2,990
| New | +$148K |
|
386
Lear
LEA
$5.91B
| $145K | 0.02% |
+1,479
| New | +$145K |
|
387
Microchip Technology
MCHP
$35.6B
| $145K | 0.02% |
+6,446
| New | +$145K |
|
|
XONE
388
DELISTED
The ExOne Company
XONE
| $145K | 0.02% |
+8,604
| New | +$145K |
|
389
Sprouts Farmers Market
SFM
$13.6B
| $143K | 0.02% |
+4,219
| New | +$143K |
|
390
SM Energy
SM
$3.09B
| $141K | 0.02% |
+3,657
| New | +$141K |
|
391
AGCO
AGCO
$8.28B
| $140K | 0.02% |
+3,101
| New | +$140K |
|
|
AET
392
DELISTED
Aetna Inc
AET
| $140K | 0.02% |
+1,580
| New | +$140K |
|
393
TG Therapeutics
TGTX
$5.11B
| $139K | 0.02% |
+8,776
| New | +$139K |
|
|
NS
394
DELISTED
NuStar Energy L.P.
NS
| $139K | 0.02% |
+2,402
| New | +$139K |
|
|
DF
395
DELISTED
Dean Foods Company
DF
| $139K | 0.02% |
+7,183
| New | +$139K |
|
396
Atmos Energy
ATO
$26.7B
| $138K | 0.02% |
+2,484
| New | +$138K |
|
397
Capital One
COF
$142B
| $138K | 0.02% |
+1,672
| New | +$138K |
|
|
HIMX
398
Himax Technologies
HIMX
$1.46B
| $137K | 0.02% |
+16,989
| New | +$137K |
|
399
ASML
ASML
$307B
| $136K | 0.02% |
+1,259
| New | +$136K |
|
|
AREX
400
DELISTED
Approach Resources Inc.
AREX
| $136K | 0.02% |
+21,357
| New | +$136K |
|