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 |
Apple
AAPL
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Comcast
CMCSA
$123B
| $250K | ﹤0.01% |
5,348
-135,705
| -96% | -$6.34M |
|
1002
Inspirato
ISPO
$37.2M
| $250K | ﹤0.01% |
+1,262
| New | +$250K |
|
|
SJI
1003
DELISTED
South Jersey Industries, Inc.
SJI
| $250K | ﹤0.01% |
+7,242
| New | +$250K |
|
1004
Mercury Systems
MRCY
$4.42B
| $249K | ﹤0.01% |
3,866
-4,121
| -52% | -$265K |
|
1005
Pinnacle West Capital
PNW
$10.5B
| $249K | ﹤0.01% |
3,194
-21,307
| -87% | -$1.66M |
|
1006
Companhia Siderúrgica Nacional
SID
$1.97B
| $249K | ﹤0.01% |
45,988
-46,093
| -50% | -$250K |
|
1007
Gold Resource Corp
GORO
$112M
| $248K | ﹤0.01% |
110,993
+77,909
| +235% | +$174K |
|
|
MTA
1008
Metalla Royalty & Streaming
MTA
$518M
| $247K | ﹤0.01% |
35,072
+16,700
| +91% | +$118K |
|
1009
ReNew
RNW
$2.78B
| $247K | ﹤0.01% |
30,153
-133,145
| -82% | -$1.09M |
|
1010
Sangamo Therapeutics
SGMO
$158M
| $247K | ﹤0.01% |
42,540
-10,012
| -19% | -$58.1K |
|
1011
Madison Square Garden
MSGS
$4.98B
| $246K | ﹤0.01% |
1,377
+730
| +113% | +$130K |
|
1012
Workhorse Group
WKHS
$18M
| $246K | ﹤0.01% |
197
-61
| -24% | -$76.2K |
|
|
CCEC
1013
Capital Clean Energy Carriers Corp. Common Share
CCEC
$1.25B
| $245K | ﹤0.01% |
13,454
-5,305
| -28% | -$96.6K |
|
|
HSKA
1014
DELISTED
Heska Corp
HSKA
| $245K | ﹤0.01% |
+1,773
| New | +$245K |
|
1015
Acacia Research
ACTG
$312M
| $244K | ﹤0.01% |
54,279
-112,473
| -67% | -$506K |
|
|
OTLY
1016
Oatly Group
OTLY
$522M
| $244K | ﹤0.01% |
2,438
-5,893
| -71% | -$590K |
|
1017
ARK Space Exploration & Innovation ETF
ARKX
$406M
| $243K | ﹤0.01% |
13,591
-18,335
| -57% | -$328K |
|
|
RDFN
1018
DELISTED
Redfin
RDFN
| $243K | ﹤0.01% |
+13,499
| New | +$243K |
|
1019
Skywest
SKYW
$4.36B
| $243K | ﹤0.01% |
8,435
+2,623
| +45% | +$75.6K |
|
1020
Delek US
DK
$1.76B
| $242K | ﹤0.01% |
+11,407
| New | +$242K |
|
1021
Ingles Markets
IMKTA
$1.31B
| $242K | ﹤0.01% |
2,724
+31
| +1% | +$2.75K |
|
1022
LPL Financial
LPLA
$27.5B
| $242K | ﹤0.01% |
1,330
-1,530
| -53% | -$278K |
|
1023
Protolabs
PRLB
$1.2B
| $242K | ﹤0.01% |
4,590
+4,096
| +829% | +$216K |
|
|
CLPR
1024
Clipper Realty
CLPR
$71M
| $241K | ﹤0.01% |
26,668
-39,732
| -60% | -$359K |
|
1025
eHealth
EHTH
$124M
| $241K | ﹤0.01% |
+19,422
| New | +$241K |
|