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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1201
Ingersoll Rand
IR
$31.3B
| $131K | ﹤0.01% |
+2,887
| New | +$131K |
|
1202
Medallion Financial
MFIN
$244M
| $131K | ﹤0.01% |
26,764
+25,329
| +1,765% | +$124K |
|
1203
MYR Group
MYRG
$2.73B
| $131K | ﹤0.01% |
+2,191
| New | +$131K |
|
|
SMAR
1204
DELISTED
Smartsheet Inc.
SMAR
| $130K | ﹤0.01% |
+1,881
| New | +$130K |
|
|
THCX
1205
DELISTED
AXS Cannabis ETF
THCX
| $130K | ﹤0.01% |
1,047
+944
| +917% | +$117K |
|
|
ECOL
1206
DELISTED
US Ecology, Inc.
ECOL
| $130K | ﹤0.01% |
3,589
+3,058
| +576% | +$111K |
|
1207
Kilroy Realty
KRC
$5.11B
| $129K | ﹤0.01% |
2,255
-2,852
| -56% | -$163K |
|
|
GSKY
1208
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
| $129K | ﹤0.01% |
27,924
+15,231
| +120% | +$70.4K |
|
1209
Insulet
PODD
$24.1B
| $128K | ﹤0.01% |
+502
| New | +$128K |
|
|
MBT
1210
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $128K | ﹤0.01% |
+14,329
| New | +$128K |
|
1211
Blue Owl Capital
OBDC
$7.23B
| $127K | ﹤0.01% |
+10,106
| New | +$127K |
|
1212
Virtu Financial
VIRT
$3.1B
| $127K | ﹤0.01% |
5,049
-6,107
| -55% | -$154K |
|
1213
BOK Financial
BOKF
$7.06B
| $126K | ﹤0.01% |
+1,851
| New | +$126K |
|
1214
Vanguard Russell 2000 ETF
VTWO
$12.8B
| $126K | ﹤0.01% |
+1,598
| New | +$126K |
|
1215
Vanguard Extended Market ETF
VXF
$24.2B
| $126K | ﹤0.01% |
766
+358
| +88% | +$58.9K |
|
|
ACH
1216
DELISTED
Alum Corp of China Limited
ACH
| $126K | ﹤0.01% |
14,574
+10,529
| +260% | +$91K |
|
|
EMKR
1217
DELISTED
Emcore Corp
EMKR
| $126K | ﹤0.01% |
2,322
+1,753
| +308% | +$95.1K |
|
1218
Mueller Industries
MLI
$11B
| $125K | ﹤0.01% |
7,148
+6,208
| +660% | +$109K |
|
1219
Molina Healthcare
MOH
$9.8B
| $125K | ﹤0.01% |
+589
| New | +$125K |
|
1220
Regency Centers
REG
$13B
| $125K | ﹤0.01% |
2,744
-29,451
| -91% | -$1.34M |
|
1221
Wolverine World Wide
WWW
$2.48B
| $125K | ﹤0.01% |
4,001
+1,562
| +64% | +$48.8K |
|
|
PRVB
1222
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $125K | ﹤0.01% |
7,392
-8,450
| -53% | -$143K |
|
|
BNFT
1223
DELISTED
Benefitfocus, Inc.
BNFT
| $125K | ﹤0.01% |
8,697
+8,449
| +3,407% | +$121K |
|
1224
Five Point Holdings
FPH
$417M
| $124K | ﹤0.01% |
+22,752
| New | +$124K |
|
1225
Koppers
KOP
$567M
| $124K | ﹤0.01% |
4,009
-2,089
| -34% | -$64.6K |
|