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 | |
|---|---|---|---|---|---|---|
|
TBCH
576
Turtle Beach Corporation Common Stock
TBCH
$305M
| $629K | ﹤0.01% |
23,616
+2,587
| +12% | +$68.9K |
|
577
W.P. Carey
WPC
$14.9B
| $624K | ﹤0.01% |
9,011
-11,792
| -57% | -$817K |
|
|
SP
578
DELISTED
SP Plus Corporation
SP
| $624K | ﹤0.01% |
+19,049
| New | +$624K |
|
579
PAR Technology
PAR
$1.96B
| $623K | ﹤0.01% |
+9,535
| New | +$623K |
|
580
Fortuna Silver Mines
FSM
$2.35B
| $622K | ﹤0.01% |
96,245
+95,845
| +23,961% | +$619K |
|
|
PLAN
581
DELISTED
Anaplan, Inc.
PLAN
| $622K | ﹤0.01% |
11,564
+4,152
| +56% | +$223K |
|
582
Garmin
GRMN
$45.7B
| $621K | ﹤0.01% |
+4,713
| New | +$621K |
|
583
Vanguard Value ETF
VTV
$143B
| $621K | ﹤0.01% |
+4,729
| New | +$621K |
|
|
TMPO
584
DELISTED
Tempo Automation Holdings, Inc. Common Stock
TMPO
| $621K | ﹤0.01% |
+62,356
| New | +$621K |
|
585
Amplify Travel Tech ETF
AWAY
$41.7M
| $620K | ﹤0.01% |
+19,835
| New | +$620K |
|
|
GPP
586
DELISTED
Green Plains Partners LP
GPP
| $620K | ﹤0.01% |
+50,351
| New | +$620K |
|
|
RMO
587
DELISTED
Romeo Power, Inc.
RMO
| $616K | ﹤0.01% |
73,998
+63,919
| +634% | +$532K |
|
588
Celularity
CELU
$64.3M
| $614K | ﹤0.01% |
+6,095
| New | +$614K |
|
589
ODP
ODP
$668M
| $614K | ﹤0.01% |
14,191
-1,327
| -9% | -$57.4K |
|
590
AquaBounty Technologies
AQB
$4.54M
| $612K | ﹤0.01% |
4,570
+2,368
| +108% | +$317K |
|
591
Brinker International
EAT
$7.04B
| $610K | ﹤0.01% |
+8,586
| New | +$610K |
|
|
SUNL
592
DELISTED
Sunlight Financial Holdings, Inc.
SUNL
| $610K | ﹤0.01% |
+2,916
| New | +$610K |
|
593
Hecla Mining
HL
$6.04B
| $609K | ﹤0.01% |
107,090
+42,538
| +66% | +$242K |
|
594
Aspen Aerogels
ASPN
$544M
| $608K | ﹤0.01% |
29,904
+21,393
| +251% | +$435K |
|
595
Mattel
MAT
$6.06B
| $608K | ﹤0.01% |
30,536
+4,601
| +18% | +$91.6K |
|
596
Owens Corning
OC
$13B
| $608K | ﹤0.01% |
+6,610
| New | +$608K |
|
|
UNVR
597
DELISTED
Univar Solutions Inc.
UNVR
| $608K | ﹤0.01% |
+28,227
| New | +$608K |
|
598
Warrior Met Coal
HCC
$3.19B
| $603K | ﹤0.01% |
35,255
-22,361
| -39% | -$382K |
|
599
Peabody Energy
BTU
$2.33B
| $596K | ﹤0.01% |
194,855
+43,829
| +29% | +$134K |
|
600
Vanguard FTSE Emerging Markets ETF
VWO
$97.2B
| $594K | ﹤0.01% |
11,428
-2,945
| -20% | -$153K |
|