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 | |
|---|---|---|---|---|---|---|
|
SIEN
2051
DELISTED
Sientra, Inc.
SIEN
| $9K | ﹤0.01% |
1,459
-1,824
| -56% | -$11.3K |
|
|
EQRX
2052
DELISTED
EQRx, Inc. Common Stock
EQRX
| $9K | ﹤0.01% |
+1,972
| New | +$9K |
|
|
LMACA
2053
DELISTED
Liberty Media Acquisition Corporation Series A Common Stock
LMACA
| $9K | ﹤0.01% |
+1,001
| New | +$9K |
|
2054
Adient
ADNT
$2.05B
| $8K | ﹤0.01% |
+302
| New | +$8K |
|
2055
C3.ai
AI
$2.48B
| $8K | ﹤0.01% |
710
+100
| +16% | +$1.13K |
|
2056
AdvanSix
ASIX
$566M
| $8K | ﹤0.01% |
261
+196
| +302% | +$6.01K |
|
|
AZUL
2057
DELISTED
Azul
AZUL
| $8K | ﹤0.01% |
1,076
-5,695
| -84% | -$42.3K |
|
2058
Amplify Seymour Cannabis ETF
CNBS
$107M
| $8K | ﹤0.01% |
117
+13
| +13% | +$889 |
|
2059
Copa Holdings
CPA
$4.88B
| $8K | ﹤0.01% |
122
-790
| -87% | -$51.8K |
|
|
CRESY
2060
Cresud
CRESY
$531M
| $8K | ﹤0.01% |
1,696
-2,333
| -58% | -$11K |
|
2061
Global X Dow 30 Covered Call ETF
DJIA
$134M
| $8K | ﹤0.01% |
+424
| New | +$8K |
|
|
DOYU
2062
DouYu International Holdings
DOYU
$233M
| $8K | ﹤0.01% |
+809
| New | +$8K |
|
2063
GoHealth
GOCO
$77.7M
| $8K | ﹤0.01% |
1,595
+1,467
| +1,146% | +$7.36K |
|
|
JFIN
2064
Jiayin Group
JFIN
$596M
| $8K | ﹤0.01% |
3,709
-2,313
| -38% | -$4.99K |
|
2065
Liberty Latin America Class A
LILA
$1.63B
| $8K | ﹤0.01% |
1,315
-1,825
| -58% | -$11.1K |
|
2066
LG Display
LPL
$4.84B
| $8K | ﹤0.01% |
2,025
-4,001
| -66% | -$15.8K |
|
|
MOGO
2067
Mogo
MOGO
$45.9M
| $8K | ﹤0.01% |
3,094
-453
| -13% | -$1.17K |
|
2068
Mersana Therapeutics
MRSN
$36.7M
| $8K | ﹤0.01% |
50
-537
| -91% | -$85.9K |
|
2069
OFG Bancorp
OFG
$2B
| $8K | ﹤0.01% |
321
+309
| +2,575% | +$7.7K |
|
2070
ALPS O'Shares Global Internet Giants ETF
OGIG
$168M
| $8K | ﹤0.01% |
343
+180
| +110% | +$4.2K |
|
2071
ProShares Pet Care ETF
PAWZ
$56.2M
| $8K | ﹤0.01% |
+200
| New | +$8K |
|
2072
Peoples Bancorp
PEBO
$1.11B
| $8K | ﹤0.01% |
+292
| New | +$8K |
|
2073
The RealReal
REAL
$1.23B
| $8K | ﹤0.01% |
5,874
-58,200
| -91% | -$79.3K |
|
2074
Richardson Electronics
RELL
$150M
| $8K | ﹤0.01% |
591
+264
| +81% | +$3.57K |
|
2075
Senseonics Holdings
SENS
$371M
| $8K | ﹤0.01% |
6,327
+5,927
| +1,482% | +$7.49K |
|