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 | |
|---|---|---|---|---|---|---|
|
SAGE
826
DELISTED
Sage Therapeutics
SAGE
| $321K | ﹤0.01% |
3,722
+2,627
| +240% | +$227K |
|
827
Box
BOX
$4.78B
| $320K | ﹤0.01% |
17,757
-2,539
| -13% | -$45.8K |
|
828
Wabtec
WAB
$32.9B
| $317K | ﹤0.01% |
4,337
+4,152
| +2,244% | +$303K |
|
829
Invesco India ETF
PIN
$213M
| $316K | ﹤0.01% |
13,652
+12,490
| +1,075% | +$289K |
|
830
Coherent
COHR
$16.1B
| $315K | ﹤0.01% |
4,147
+1,180
| +40% | +$89.6K |
|
831
RCI Hospitality Holdings
RICK
$306M
| $315K | ﹤0.01% |
+7,996
| New | +$315K |
|
832
SI-BONE Inc
SIBN
$704M
| $314K | ﹤0.01% |
+10,511
| New | +$314K |
|
|
YSG
833
Yatsen Holding
YSG
$995M
| $314K | ﹤0.01% |
+3,703
| New | +$314K |
|
|
GRA
834
DELISTED
W.R. Grace & Co.
GRA
| $314K | ﹤0.01% |
+5,731
| New | +$314K |
|
835
Yelp
YELP
$2B
| $313K | ﹤0.01% |
9,599
-27,391
| -74% | -$893K |
|
836
Progyny
PGNY
$1.99B
| $312K | ﹤0.01% |
+7,381
| New | +$312K |
|
|
PING
837
DELISTED
Ping Identity Holding Corp.
PING
| $312K | ﹤0.01% |
10,928
+10,542
| +2,731% | +$301K |
|
838
Ardelyx
ARDX
$1.61B
| $311K | ﹤0.01% |
+48,205
| New | +$311K |
|
839
C3.ai
AI
$2.26B
| $310K | ﹤0.01% |
+2,237
| New | +$310K |
|
840
Anavex Life Sciences
AVXL
$823M
| $308K | ﹤0.01% |
57,203
-27,194
| -32% | -$146K |
|
841
Church & Dwight Co
CHD
$23B
| $307K | ﹤0.01% |
+3,521
| New | +$307K |
|
|
ENZ
842
DELISTED
Enzo Biochem, Inc.
ENZ
| $307K | ﹤0.01% |
122,039
+103,766
| +568% | +$261K |
|
843
Check Point Software Technologies
CHKP
$21.1B
| $305K | ﹤0.01% |
+2,300
| New | +$305K |
|
844
KALA BIO
KALA
$119M
| $305K | ﹤0.01% |
+902
| New | +$305K |
|
845
Veritone
VERI
$195M
| $305K | ﹤0.01% |
10,729
+6,688
| +166% | +$190K |
|
846
Kodak
KODK
$485M
| $304K | ﹤0.01% |
+37,415
| New | +$304K |
|
847
Neogen
NEOG
$1.25B
| $304K | ﹤0.01% |
+7,690
| New | +$304K |
|
848
Rigel Pharmaceuticals
RIGL
$678M
| $304K | ﹤0.01% |
8,708
+5,509
| +172% | +$192K |
|
849
Franklin Covey
FC
$246M
| $303K | ﹤0.01% |
+13,642
| New | +$303K |
|
850
Rhythm Pharmaceuticals
RYTM
$6.5B
| $303K | ﹤0.01% |
10,200
+5,415
| +113% | +$161K |
|