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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Kinross Gold
KGC
$28B
| $463K | ﹤0.01% |
36,740
-159,931
| -81% | -$2.02M |
|
577
Anterix
ATEX
$397M
| $462K | ﹤0.01% |
12,634
+12,511
| +10,172% | +$458K |
|
578
Werner Enterprises
WERN
$1.66B
| $462K | ﹤0.01% |
+15,789
| New | +$462K |
|
579
Vishay Precision Group
VPG
$396M
| $460K | ﹤0.01% |
+19,121
| New | +$460K |
|
580
Compass
COMP
$4.83B
| $459K | ﹤0.01% |
52,590
-46,203
| -47% | -$403K |
|
581
Sundial Growers
SNDL
$607M
| $459K | ﹤0.01% |
325,975
-110,938
| -25% | -$156K |
|
582
iQIYI
IQ
$2.5B
| $458K | ﹤0.01% |
+202,804
| New | +$458K |
|
583
Aaon
AAON
$6.93B
| $457K | ﹤0.01% |
5,856
+5,110
| +685% | +$399K |
|
584
Direxion Daily Regional Banks Bull 3X Shares
DPST
$718M
| $456K | ﹤0.01% |
+5,271
| New | +$456K |
|
585
Mirion Technologies
MIR
$4.92B
| $454K | ﹤0.01% |
+31,370
| New | +$454K |
|
586
Petco
WOOF
$1B
| $454K | ﹤0.01% |
149,033
+127,175
| +582% | +$387K |
|
587
Couchbase
BASE
$1.35B
| $453K | ﹤0.01% |
+28,789
| New | +$453K |
|
588
Nexstar Media Group
NXST
$5.98B
| $451K | ﹤0.01% |
+2,522
| New | +$451K |
|
589
Bausch Health
BHC
$2.64B
| $447K | ﹤0.01% |
69,230
+3,573
| +5% | +$23.1K |
|
590
Schneider National
SNDR
$4.18B
| $446K | ﹤0.01% |
+19,552
| New | +$446K |
|
591
Repligen
RGEN
$6.76B
| $445K | ﹤0.01% |
3,504
+223
| +7% | +$28.3K |
|
592
Entegris
ENTG
$12B
| $442K | ﹤0.01% |
+5,059
| New | +$442K |
|
593
Rocket Lab Corporation Common Stock
RKLB
$22.3B
| $442K | ﹤0.01% |
24,763
+11,655
| +89% | +$208K |
|
594
Air Products & Chemicals
APD
$64B
| $437K | ﹤0.01% |
+1,485
| New | +$437K |
|
595
HubSpot
HUBS
$25.8B
| $436K | ﹤0.01% |
+764
| New | +$436K |
|
|
FINV
596
FinVolution Group
FINV
$1.94B
| $435K | ﹤0.01% |
45,260
+36,620
| +424% | +$352K |
|
597
Biogen
BIIB
$20.9B
| $432K | ﹤0.01% |
3,159
-30,383
| -91% | -$4.15M |
|
598
Helix Energy Solutions
HLX
$923M
| $432K | ﹤0.01% |
52,094
+47,645
| +1,071% | +$395K |
|
599
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$249M
| $431K | ﹤0.01% |
+8,381
| New | +$431K |
|
600
Applied Optoelectronics
AAOI
$1.73B
| $430K | ﹤0.01% |
28,067
-10,017
| -26% | -$153K |
|