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 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BCTX
951
Briacell Therapeutics
BCTX
$13.6M
| $126K | ﹤0.01% |
193
+78
| +68% | +$50.9K |
|
952
Insulet
PODD
$23.8B
| $126K | ﹤0.01% |
429
-3,106
| -88% | -$912K |
|
953
RPM International
RPM
$16.5B
| $125K | ﹤0.01% |
+1,284
| New | +$125K |
|
954
Steven Madden
SHOO
$2.22B
| $125K | ﹤0.01% |
+3,929
| New | +$125K |
|
|
DCFC
955
DELISTED
Tritium DCFC Limited Ordinary Shares
DCFC
| $125K | ﹤0.01% |
+373
| New | +$125K |
|
|
DICE
956
DELISTED
DICE Therapeutics, Inc. Common Stock
DICE
| $125K | ﹤0.01% |
+4,018
| New | +$125K |
|
957
ProShares S&P 500 Dividend Aristocrats ETF
NOBL
$11.7B
| $124K | ﹤0.01% |
+1,381
| New | +$124K |
|
958
Rogers Communications
RCI
$19.4B
| $124K | ﹤0.01% |
2,652
+1,512
| +133% | +$70.7K |
|
959
USA Compression Partners
USAC
$2.84B
| $124K | ﹤0.01% |
6,372
-13,701
| -68% | -$267K |
|
960
Axcelis
ACLS
$2.71B
| $123K | ﹤0.01% |
+1,556
| New | +$123K |
|
961
RPC Inc
RES
$1.03B
| $123K | ﹤0.01% |
13,913
+6,578
| +90% | +$58.2K |
|
962
Upwork
UPWK
$2.17B
| $123K | ﹤0.01% |
+11,858
| New | +$123K |
|
963
Amphenol
APH
$146B
| $122K | ﹤0.01% |
+3,206
| New | +$122K |
|
964
ProShares UltraShort Energy
DUG
$10.6M
| $122K | ﹤0.01% |
2,481
+1,283
| +107% | +$63.1K |
|
965
Masimo
MASI
$7.94B
| $122K | ﹤0.01% |
831
-235
| -22% | -$34.5K |
|
966
MacroGenics
MGNX
$104M
| $122K | ﹤0.01% |
18,289
-1,134
| -6% | -$7.57K |
|
967
Viasat
VSAT
$4.28B
| $122K | ﹤0.01% |
3,863
+2,499
| +183% | +$78.9K |
|
|
MODN
968
DELISTED
MODEL N, INC.
MODN
| $122K | ﹤0.01% |
+3,019
| New | +$122K |
|
969
ProShares VIX Mid-Term Futures ETF
VIXM
$40.8M
| $121K | ﹤0.01% |
4,018
-12,092
| -75% | -$364K |
|
970
BJ's Restaurants
BJRI
$691M
| $120K | ﹤0.01% |
4,560
+1,276
| +39% | +$33.6K |
|
971
CureVac
CVAC
$1.21B
| $120K | ﹤0.01% |
+19,922
| New | +$120K |
|
972
iShares Core MSCI Emerging Markets ETF
IEMG
$106B
| $120K | ﹤0.01% |
2,574
-2,463
| -49% | -$115K |
|
973
MidCap Financial Investment
MFIC
$1.17B
| $120K | ﹤0.01% |
+10,560
| New | +$120K |
|
974
MPLX
MPLX
$51.8B
| $120K | ﹤0.01% |
3,671
-53,055
| -94% | -$1.73M |
|
975
JPMorgan Nasdaq Equity Premium Income ETF
JEPQ
$30.2B
| $119K | ﹤0.01% |
+2,925
| New | +$119K |
|