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
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1251
Alliance Resource Partners
ARLP
$2.89B
| $47K | ﹤0.01% |
14,664
+12,562
| +598% | +$40.3K |
|
1252
British American Tobacco
BTI
$125B
| $47K | ﹤0.01% |
+1,231
| New | +$47K |
|
1253
Gold Resource Corp
GORO
$114M
| $47K | ﹤0.01% |
11,528
+10,545
| +1,073% | +$43K |
|
1254
UFP Industries
UFPI
$6B
| $47K | ﹤0.01% |
951
-332
| -26% | -$16.4K |
|
|
MRNS
1255
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $47K | ﹤0.01% |
4,675
-786
| -14% | -$7.9K |
|
1256
Fidelity MSCI Energy Index ETF
FENY
$1.45B
| $46K | ﹤0.01% |
+4,701
| New | +$46K |
|
1257
Allison Transmission
ALSN
$7.57B
| $45K | ﹤0.01% |
1,235
-35,610
| -97% | -$1.3M |
|
1258
Century Communities
CCS
$2.06B
| $45K | ﹤0.01% |
1,497
-3,987
| -73% | -$120K |
|
1259
Manulife Financial
MFC
$54B
| $45K | ﹤0.01% |
+3,377
| New | +$45K |
|
1260
Invesco Preferred ETF
PGX
$3.99B
| $45K | ﹤0.01% |
+3,190
| New | +$45K |
|
1261
Vanguard Utilities ETF
VPU
$7.33B
| $45K | ﹤0.01% |
368
-631
| -63% | -$77.2K |
|
1262
XBiotech
XBIT
$86M
| $45K | ﹤0.01% |
3,305
-9,962
| -75% | -$136K |
|
|
TWNK
1263
DELISTED
Hostess Brands, Inc. Class A Common Stock
TWNK
| $45K | ﹤0.01% |
3,715
-14,165
| -79% | -$172K |
|
|
QUOT
1264
DELISTED
Quotient Technology Inc
QUOT
| $45K | ﹤0.01% |
6,221
+2,831
| +84% | +$20.5K |
|
1265
1-800-Flowers.com
FLWS
$335M
| $44K | ﹤0.01% |
2,199
-4,938
| -69% | -$98.8K |
|
1266
Intuit
INTU
$184B
| $44K | ﹤0.01% |
+150
| New | +$44K |
|
|
WPX
1267
DELISTED
WPX Energy, Inc.
WPX
| $44K | ﹤0.01% |
7,010
-212,900
| -97% | -$1.34M |
|
|
AGEN
1268
Agenus
AGEN
$151M
| $44K | ﹤0.01% |
583
-376
| -39% | -$28.4K |
|
1269
Ovintiv
OVV
$10.9B
| $44K | ﹤0.01% |
4,679
-30,414
| -87% | -$286K |
|
|
ARTY
1270
iShares Future AI & Tech ETF
ARTY
$1.46B
| $44K | ﹤0.01% |
1,512
+1,510
| +75,500% | +$43.9K |
|
|
KA
1271
DELISTED
Kineta, Inc. Common Stock
KA
| $44K | ﹤0.01% |
230
-215
| -48% | -$41.1K |
|
|
FSCT
1272
DELISTED
ForeScout Technologies, Inc. Common Stock
FSCT
| $44K | ﹤0.01% |
2,122
-27,173
| -93% | -$563K |
|
1273
Quest Diagnostics
DGX
$20.5B
| $43K | ﹤0.01% |
385
-19,082
| -98% | -$2.13M |
|
1274
National CineMedia
NCMI
$443M
| $43K | ﹤0.01% |
+1,466
| New | +$43K |
|
1275
Nu Skin
NUS
$579M
| $43K | ﹤0.01% |
+1,138
| New | +$43K |
|