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 | |
|---|---|---|---|---|---|---|
501
Hormel Foods
HRL
$14.1B
| $360K | ﹤0.01% |
+8,058
| New | +$360K |
|
502
AMN Healthcare
AMN
$799M
| $358K | ﹤0.01% |
+7,615
| New | +$358K |
|
503
Synovus
SNV
$7.15B
| $358K | ﹤0.01% |
10,440
-29,546
| -74% | -$1.01M |
|
|
RUSL
504
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $358K | ﹤0.01% |
9,620
+4,049
| +73% | +$151K |
|
505
United Therapeutics
UTHR
$18.1B
| $356K | ﹤0.01% |
+3,038
| New | +$356K |
|
506
Upwork
UPWK
$2.15B
| $353K | ﹤0.01% |
18,453
+18,206
| +7,371% | +$348K |
|
|
LX
507
LexinFintech Holdings
LX
$1.02B
| $352K | ﹤0.01% |
33,537
-16,307
| -33% | -$171K |
|
|
PBCT
508
DELISTED
People's United Financial Inc
PBCT
| $351K | ﹤0.01% |
21,381
-38,461
| -64% | -$631K |
|
509
VirnetX
VHC
$78.5M
| $350K | ﹤0.01% |
2,769
+1,916
| +225% | +$242K |
|
|
DISCA
510
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $350K | ﹤0.01% |
12,963
-840
| -6% | -$22.7K |
|
|
TLRD
511
DELISTED
Tailored Brands, Inc.
TLRD
| $347K | ﹤0.01% |
+44,329
| New | +$347K |
|
512
Dynavax Technologies
DVAX
$1.18B
| $344K | ﹤0.01% |
47,122
-36,683
| -44% | -$268K |
|
513
Realty Income
O
$54.2B
| $342K | ﹤0.01% |
+4,804
| New | +$342K |
|
514
Whirlpool
WHR
$5.28B
| $342K | ﹤0.01% |
2,576
+172
| +7% | +$22.8K |
|
515
Talos Energy
TALO
$1.65B
| $341K | ﹤0.01% |
12,840
+9,909
| +338% | +$263K |
|
|
SYNH
516
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $340K | ﹤0.01% |
+6,576
| New | +$340K |
|
517
Huntington Ingalls Industries
HII
$10.6B
| $339K | ﹤0.01% |
+1,637
| New | +$339K |
|
518
Parker-Hannifin
PH
$96.1B
| $339K | ﹤0.01% |
+1,979
| New | +$339K |
|
519
Digimarc
DMRC
$181M
| $338K | ﹤0.01% |
10,773
-547
| -5% | -$17.2K |
|
520
Titan Machinery
TITN
$482M
| $337K | ﹤0.01% |
21,684
+15,143
| +232% | +$235K |
|
521
Republic Services
RSG
$71.7B
| $336K | ﹤0.01% |
+4,184
| New | +$336K |
|
|
SDRL
522
DELISTED
Seadrill Limited Common Stock
SDRL
| $335K | ﹤0.01% |
+40,394
| New | +$335K |
|
523
8x8 Inc
EGHT
$282M
| $334K | ﹤0.01% |
+16,542
| New | +$334K |
|
|
MTOR
524
DELISTED
MERITOR, Inc.
MTOR
| $333K | ﹤0.01% |
16,370
+9,664
| +144% | +$197K |
|
525
FirstEnergy
FE
$25.1B
| $332K | ﹤0.01% |
+7,985
| New | +$332K |
|