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
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
701
Sleep Number
SNBR
$217M
| $441K | ﹤0.01% |
5,389
+5,214
| +2,979% | +$427K |
|
|
AVTA
702
DELISTED
Avantax, Inc. Common Stock
AVTA
| $441K | ﹤0.01% |
27,748
+9,381
| +51% | +$149K |
|
703
abrdn Physical Gold Shares ETF
SGOL
$5.78B
| $440K | ﹤0.01% |
24,103
-32,782
| -58% | -$598K |
|
704
Ford
F
$46.4B
| $439K | ﹤0.01% |
50,000
-281,972
| -85% | -$2.48M |
|
|
AAN
705
DELISTED
The Aaron's Company, Inc.
AAN
| $439K | ﹤0.01% |
+23,179
| New | +$439K |
|
706
Direxion Daily Aerospace & Defense Bull 3X Shares
DFEN
$338M
| $437K | ﹤0.01% |
25,864
+18,053
| +231% | +$305K |
|
707
iHeartMedia
IHRT
$329M
| $437K | ﹤0.01% |
+33,692
| New | +$437K |
|
708
HealthEquity
HQY
$7.9B
| $429K | ﹤0.01% |
6,163
-10,507
| -63% | -$731K |
|
|
STOR
709
DELISTED
STORE Capital Corporation
STOR
| $428K | ﹤0.01% |
12,620
-11,669
| -48% | -$396K |
|
710
Clearfield
CLFD
$478M
| $426K | ﹤0.01% |
17,242
-4,375
| -20% | -$108K |
|
711
Orthofix Medical
OFIX
$569M
| $425K | ﹤0.01% |
9,896
+3,621
| +58% | +$156K |
|
712
Coeur Mining
CDE
$9.71B
| $424K | ﹤0.01% |
41,000
-85,104
| -67% | -$880K |
|
713
Immersion
IMMR
$223M
| $424K | ﹤0.01% |
37,598
+37,450
| +25,304% | +$422K |
|
|
SRG
714
Seritage Growth Properties
SRG
$255M
| $424K | ﹤0.01% |
28,903
+11,300
| +64% | +$166K |
|
|
GPUS
715
Hyperscale Data, Inc.
GPUS
$10.1M
| $422K | ﹤0.01% |
+1
| New | +$422K |
|
|
RP
716
DELISTED
RealPage, Inc.
RP
| $422K | ﹤0.01% |
4,840
-7,430
| -61% | -$648K |
|
717
Mercury Insurance
MCY
$4.34B
| $420K | ﹤0.01% |
+8,055
| New | +$420K |
|
718
Hecla Mining
HL
$7.51B
| $418K | ﹤0.01% |
64,552
-42,504
| -40% | -$275K |
|
719
Weibo
WB
$2.96B
| $418K | ﹤0.01% |
+10,214
| New | +$418K |
|
|
AKTS
720
DELISTED
AKOUSTIS TECHNOLOGIES, INC.
AKTS
| $418K | ﹤0.01% |
34,255
+32,930
| +2,485% | +$402K |
|
721
Arbutus Biopharma
ABUS
$960M
| $416K | ﹤0.01% |
+117,235
| New | +$416K |
|
722
Ball Corp
BALL
$13.8B
| $415K | ﹤0.01% |
4,454
-10,687
| -71% | -$996K |
|
|
TVRD
723
Tvardi Therapeutics, Inc. Common Stock
TVRD
$303M
| $415K | ﹤0.01% |
763
+542
| +245% | +$295K |
|
724
ARK Web x.0 ETF
ARKW
$2.42B
| $414K | ﹤0.01% |
2,829
-8,304
| -75% | -$1.22M |
|
725
Direxion Daily MSCI India Bull 2X Shares
INDL
$68.1M
| $414K | ﹤0.01% |
9,490
-10,594
| -53% | -$462K |
|