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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
POSH
1126
DELISTED
Poshmark, Inc. Class A Common Stock
POSH
| $104K | ﹤0.01% |
6,679
+6,192
| +1,271% | +$96.4K |
|
1127
Catalyst Pharmaceutical
CPRX
$2.44B
| $103K | ﹤0.01% |
8,076
+5,121
| +173% | +$65.3K |
|
1128
Hycroft Mining Holding Corp
HYMC
$250M
| $103K | ﹤0.01% |
17,067
+7,537
| +79% | +$45.5K |
|
1129
Matador Resources
MTDR
$5.93B
| $102K | ﹤0.01% |
+2,105
| New | +$102K |
|
1130
O-I Glass
OI
$1.99B
| $102K | ﹤0.01% |
7,932
+2,312
| +41% | +$29.7K |
|
1131
Cerus
CERS
$236M
| $101K | ﹤0.01% |
28,312
+18,217
| +180% | +$65K |
|
1132
Dominion Energy
D
$51.2B
| $101K | ﹤0.01% |
+1,469
| New | +$101K |
|
1133
Comfort Systems
FIX
$26.6B
| $101K | ﹤0.01% |
+1,044
| New | +$101K |
|
1134
Cassava Sciences
SAVA
$102M
| $101K | ﹤0.01% |
2,422
-10,854
| -82% | -$453K |
|
1135
Symbotic
SYM
$5.32B
| $101K | ﹤0.01% |
+8,860
| New | +$101K |
|
1136
Vertex Pharmaceuticals
VRTX
$101B
| $101K | ﹤0.01% |
350
-11,551
| -97% | -$3.33M |
|
1137
Xylem
XYL
$34.5B
| $101K | ﹤0.01% |
1,166
-3,682
| -76% | -$319K |
|
|
MNTV
1138
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $101K | ﹤0.01% |
17,552
+17,210
| +5,032% | +$99K |
|
1139
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.81B
| $100K | ﹤0.01% |
+3,232
| New | +$100K |
|
1140
MiMedx Group
MDXG
$1.03B
| $100K | ﹤0.01% |
34,858
+20,317
| +140% | +$58.3K |
|
1141
Global X US Infrastructure Development ETF
PAVE
$9.38B
| $100K | ﹤0.01% |
4,348
+784
| +22% | +$18K |
|
1142
Direxion Daily Consumer Discretionary Bull 3X Shares
WANT
$26.4M
| $100K | ﹤0.01% |
4,268
-4,025
| -49% | -$94.3K |
|
1143
WD-40
WDFC
$2.86B
| $99K | ﹤0.01% |
+566
| New | +$99K |
|
1144
Evolv Technologies
EVLV
$1.51B
| $99K | ﹤0.01% |
46,757
-23,253
| -33% | -$49.2K |
|
|
HUYA
1145
Huya Inc
HUYA
$780M
| $99K | ﹤0.01% |
44,913
-11,988
| -21% | -$26.4K |
|
1146
PolyPid
PYPD
$55.2M
| $99K | ﹤0.01% |
2,831
+1,826
| +182% | +$63.9K |
|
1147
ProShares Short Real Estate
REK
$11.3M
| $99K | ﹤0.01% |
4,657
+2,152
| +86% | +$45.7K |
|
1148
Vanguard Mid-Cap ETF
VO
$88B
| $99K | ﹤0.01% |
529
-232
| -30% | -$43.4K |
|
|
AFIB
1149
DELISTED
Acutus Medical, Inc. Common Stock
AFIB
| $99K | ﹤0.01% |
112,977
+8,980
| +9% | +$7.87K |
|
|
BLTS
1150
DELISTED
Bright Lights Acquisition Corp. Class A Common Stock
BLTS
| $99K | ﹤0.01% |
+10,001
| New | +$99K |
|