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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Playboy, Inc. Common Stock
PLBY
$187M
| $836K | ﹤0.01% |
+42,710
| New | +$836K |
|
477
Crocs
CROX
$4.72B
| $833K | ﹤0.01% |
10,357
+1,511
| +17% | +$122K |
|
478
Acuity Brands
AYI
$10.4B
| $824K | ﹤0.01% |
4,997
+3,907
| +358% | +$644K |
|
479
Rapid7
RPD
$1.32B
| $824K | ﹤0.01% |
11,053
-10,525
| -49% | -$785K |
|
480
Banco Bradesco
BBD
$33.6B
| $823K | ﹤0.01% |
+212,057
| New | +$823K |
|
481
Atlanta Braves Holdings Series B
BATRK
$2.66B
| $822K | ﹤0.01% |
29,580
+13,053
| +79% | +$363K |
|
482
Papa John's
PZZA
$1.58B
| $822K | ﹤0.01% |
9,276
+962
| +12% | +$85.2K |
|
483
Protolabs
PRLB
$1.19B
| $818K | ﹤0.01% |
6,725
+5,926
| +742% | +$721K |
|
484
Anterix
ATEX
$412M
| $815K | ﹤0.01% |
17,288
+10,124
| +141% | +$477K |
|
485
Direxion Daily Real Estate Bull 3X Shares
DRN
$65.3M
| $815K | ﹤0.01% |
51,491
+15,063
| +41% | +$238K |
|
|
FUV
486
DELISTED
Arcimoto, Inc. Common Stock
FUV
| $815K | ﹤0.01% |
+3,083
| New | +$815K |
|
487
Global X Uranium ETF
URA
$4.17B
| $814K | ﹤0.01% |
43,250
-7,706
| -15% | -$145K |
|
|
REGI
488
DELISTED
Renewable Energy Group, Inc.
REGI
| $814K | ﹤0.01% |
12,327
-7,068
| -36% | -$467K |
|
489
Planet Fitness
PLNT
$8.77B
| $812K | ﹤0.01% |
10,508
-12,064
| -53% | -$932K |
|
490
Vuzix
VUZI
$188M
| $809K | ﹤0.01% |
31,825
+3,586
| +13% | +$91.2K |
|
491
Heritage Insurance Holdings
HRTG
$747M
| $808K | ﹤0.01% |
+72,958
| New | +$808K |
|
492
ProQR Therapeutics
PRQR
$258M
| $807K | ﹤0.01% |
122,183
+119,196
| +3,990% | +$787K |
|
|
RFP
493
DELISTED
Resolute Forest Products Inc.
RFP
| $806K | ﹤0.01% |
73,659
+64,186
| +678% | +$702K |
|
494
RCI Hospitality Holdings
RICK
$315M
| $804K | ﹤0.01% |
12,650
+4,654
| +58% | +$296K |
|
|
USCR
495
DELISTED
U S Concrete, Inc.
USCR
| $802K | ﹤0.01% |
+10,947
| New | +$802K |
|
|
HUYA
496
Huya Inc
HUYA
$796M
| $799K | ﹤0.01% |
41,047
+40,992
| +74,531% | +$798K |
|
|
VER
497
DELISTED
VEREIT, Inc.
VER
| $797K | ﹤0.01% |
+20,656
| New | +$797K |
|
498
Texas Roadhouse
TXRH
$11.2B
| $795K | ﹤0.01% |
8,288
+6,415
| +342% | +$615K |
|
499
CoreCivic
CXW
$2.11B
| $794K | ﹤0.01% |
87,815
-35,869
| -29% | -$324K |
|
|
FCAC
500
DELISTED
Falcon Capital Acquisition Corp. Class A Common Stock
FCAC
| $793K | ﹤0.01% |
+79,585
| New | +$793K |
|