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 | |
|---|---|---|---|---|---|---|
|
VRN
701
DELISTED
Veren
VRN
| $328K | ﹤0.01% |
49,647
-85,471
| -63% | -$565K |
|
702
SuRo Capital
SSSS
$213M
| $326K | ﹤0.01% |
65,640
+27,672
| +73% | +$137K |
|
703
Talkspace
TALK
$434M
| $326K | ﹤0.01% |
127,697
+99,343
| +350% | +$254K |
|
|
TEN
704
Tsakos Energy Navigation Ltd.
TEN
$646M
| $326K | ﹤0.01% |
19,160
+15,772
| +466% | +$268K |
|
|
UNIT
705
Uniti Group
UNIT
$1.73B
| $325K | ﹤0.01% |
+64,568
| New | +$325K |
|
706
Byrna Technologies
BYRN
$485M
| $324K | ﹤0.01% |
19,299
-9,967
| -34% | -$167K |
|
707
Invesco Mortgage Capital
IVR
$511M
| $322K | ﹤0.01% |
40,901
-3,184
| -7% | -$25.1K |
|
708
Direxion Daily Small Cap Bear 3x Shares
TZA
$282M
| $322K | ﹤0.01% |
+18,942
| New | +$322K |
|
709
Beam Therapeutics
BEAM
$2.1B
| $321K | ﹤0.01% |
16,467
+10,571
| +179% | +$206K |
|
710
Idexx Laboratories
IDXX
$51.8B
| $320K | ﹤0.01% |
+762
| New | +$320K |
|
711
ADT
ADT
$7.18B
| $319K | ﹤0.01% |
+39,210
| New | +$319K |
|
712
Ingles Markets
IMKTA
$1.31B
| $318K | ﹤0.01% |
4,883
-455
| -9% | -$29.6K |
|
713
Essex Property Trust
ESS
$17.2B
| $316K | ﹤0.01% |
1,032
+935
| +964% | +$286K |
|
714
Global X Russell 2000 Covered Call ETF
RYLD
$1.27B
| $316K | ﹤0.01% |
+20,951
| New | +$316K |
|
715
Global X Copper Miners ETF NEW
COPX
$2.22B
| $313K | ﹤0.01% |
8,016
-17,856
| -69% | -$697K |
|
716
Ichor Holdings
ICHR
$590M
| $313K | ﹤0.01% |
13,846
+13,760
| +16,000% | +$311K |
|
717
Thomson Reuters
TRI
$77.9B
| $312K | ﹤0.01% |
+1,807
| New | +$312K |
|
718
Banco Santander
SAN
$149B
| $310K | ﹤0.01% |
46,318
+22,332
| +93% | +$149K |
|
719
Spectrum Brands
SPB
$1.32B
| $307K | ﹤0.01% |
4,294
+2,733
| +175% | +$195K |
|
|
XNET
720
Xunlei
XNET
$472M
| $307K | ﹤0.01% |
68,377
+8,295
| +14% | +$37.2K |
|
721
Freshworks
FRSH
$3.79B
| $304K | ﹤0.01% |
21,571
-49,170
| -70% | -$693K |
|
722
TETRA Technologies
TTI
$640M
| $304K | ﹤0.01% |
+90,660
| New | +$304K |
|
723
Geron
GERN
$823M
| $302K | ﹤0.01% |
190,021
+47,439
| +33% | +$75.4K |
|
|
KLC
724
KinderCare Learning Companies, Inc.
KLC
$885M
| $302K | ﹤0.01% |
26,065
+24,483
| +1,548% | +$284K |
|
725
UWM Holdings
UWMC
$1.53B
| $298K | ﹤0.01% |
54,595
-74,888
| -58% | -$409K |
|