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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Golden Entertainment
GDEN
$649M
| $299K | ﹤0.01% |
+21,171
| New | +$299K |
|
552
Akebia Therapeutics
AKBA
$785M
| $298K | ﹤0.01% |
+36,490
| New | +$298K |
|
553
Lazard
LAZ
$5.32B
| $298K | ﹤0.01% |
8,269
+7,069
| +589% | +$255K |
|
|
PS
554
DELISTED
Pluralsight, Inc. Class A Common Stock
PS
| $298K | ﹤0.01% |
9,417
+5,441
| +137% | +$172K |
|
|
ZUO
555
DELISTED
Zuora, Inc.
ZUO
| $295K | ﹤0.01% |
14,729
+4,681
| +47% | +$93.8K |
|
|
FLXN
556
DELISTED
Flexion Therapeutics, Inc.
FLXN
| $294K | ﹤0.01% |
+23,589
| New | +$294K |
|
|
VSI
557
DELISTED
Vitamin Shoppe Inc.
VSI
| $294K | ﹤0.01% |
+41,874
| New | +$294K |
|
558
ANI Pharmaceuticals
ANIP
$2.07B
| $292K | ﹤0.01% |
4,153
-1,371
| -25% | -$96.4K |
|
559
Moderna
MRNA
$9.78B
| $292K | ﹤0.01% |
14,378
+13,278
| +1,207% | +$270K |
|
|
CBLK
560
DELISTED
Carbon Black, Inc. Common Stock
CBLK
| $291K | ﹤0.01% |
20,931
+19,580
| +1,449% | +$272K |
|
561
Hilton Grand Vacations
HGV
$4.15B
| $290K | ﹤0.01% |
9,403
-32,027
| -77% | -$988K |
|
562
Gildan
GIL
$8.27B
| $288K | ﹤0.01% |
8,009
+4,593
| +134% | +$165K |
|
563
MSC Industrial Direct
MSM
$5.14B
| $287K | ﹤0.01% |
+3,470
| New | +$287K |
|
564
Smith & Nephew
SNN
$16.5B
| $287K | ﹤0.01% |
+7,162
| New | +$287K |
|
565
CRH
CRH
$75.4B
| $285K | ﹤0.01% |
9,205
+6,063
| +193% | +$188K |
|
566
Sleep Number
SNBR
$220M
| $285K | ﹤0.01% |
+6,081
| New | +$285K |
|
|
DBD
567
DELISTED
Diebold Nixdorf Incorporated
DBD
| $284K | ﹤0.01% |
25,668
+13,549
| +112% | +$150K |
|
|
TGH
568
DELISTED
Textainer Group Holdings limited
TGH
| $283K | ﹤0.01% |
29,360
+8,310
| +39% | +$80.1K |
|
|
EIGI
569
DELISTED
Endurance International Group Holdings, Inc.
EIGI
| $283K | ﹤0.01% |
39,083
+33,957
| +662% | +$246K |
|
570
Signet Jewelers
SIG
$3.85B
| $282K | ﹤0.01% |
+10,410
| New | +$282K |
|
|
PVG
571
DELISTED
PRETIUM RESOURCES INC.
PVG
| $281K | ﹤0.01% |
+32,917
| New | +$281K |
|
|
CBIO
572
Crescent Biopharma, Inc. Common Stock
CBIO
$198M
| $280K | ﹤0.01% |
225
+181
| +411% | +$225K |
|
573
PagSeguro Digital
PAGS
$2.8B
| $280K | ﹤0.01% |
9,399
-26,257
| -74% | -$782K |
|
574
Brown-Forman Class B
BF.B
$13.7B
| $279K | ﹤0.01% |
+5,296
| New | +$279K |
|
575
Embraer
ERJ
$11.2B
| $279K | ﹤0.01% |
14,714
+4,268
| +41% | +$80.9K |
|