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 | |
|---|---|---|---|---|---|---|
1276
Prothena Corp
PRTA
$442M
| $106K | ﹤0.01% |
8,891
+2,029
| +30% | +$24.2K |
|
|
EXK
1277
Endeavour Silver
EXK
$1.78B
| $105K | ﹤0.01% |
20,852
-67,296
| -76% | -$339K |
|
1278
Quaker Houghton
KWR
$2.46B
| $105K | ﹤0.01% |
416
-450
| -52% | -$114K |
|
1279
Ribbon Communications
RBBN
$676M
| $105K | ﹤0.01% |
16,007
+15,935
| +22,132% | +$105K |
|
1280
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.24B
| $105K | ﹤0.01% |
1,590
-1,380
| -46% | -$91.1K |
|
1281
Telus
TU
$24.3B
| $105K | ﹤0.01% |
+5,329
| New | +$105K |
|
|
SIOX
1282
DELISTED
Sio Gene Therapies Inc. Common Stock
SIOX
| $105K | ﹤0.01% |
37,863
-10,381
| -22% | -$28.8K |
|
|
CMO
1283
DELISTED
Capstead Mortgage Corp.
CMO
| $105K | ﹤0.01% |
18,100
-3,347
| -16% | -$19.4K |
|
1284
Matrix Service
MTRX
$353M
| $104K | ﹤0.01% |
9,451
+7,285
| +336% | +$80.2K |
|
1285
ProShares UltraShort Financials
SKF
$9.98M
| $104K | ﹤0.01% |
826
+589
| +249% | +$74.2K |
|
|
GPX
1286
DELISTED
GP Strategies Corp.
GPX
| $104K | ﹤0.01% |
8,853
+3,346
| +61% | +$39.3K |
|
1287
BWX Technologies
BWXT
$15.4B
| $103K | ﹤0.01% |
1,710
-1,156
| -40% | -$69.6K |
|
1288
SK Telecom
SKM
$8.36B
| $103K | ﹤0.01% |
+2,568
| New | +$103K |
|
1289
Alaunos Therapeutics
TCRT
$5.1M
| $103K | ﹤0.01% |
274
-29
| -10% | -$10.9K |
|
1290
First Trust NASDAQ Technology Dividend Index Fund
TDIV
$3.65B
| $103K | ﹤0.01% |
+2,083
| New | +$103K |
|
1291
CMS Energy
CMS
$21.5B
| $102K | ﹤0.01% |
+1,677
| New | +$102K |
|
|
MOMO
1292
Hello Group
MOMO
$1.19B
| $102K | ﹤0.01% |
7,354
-75,209
| -91% | -$1.04M |
|
1293
Gannett
GCI
$620M
| $101K | ﹤0.01% |
30,334
+24,729
| +441% | +$82.3K |
|
1294
Copa Holdings
CPA
$4.86B
| $100K | ﹤0.01% |
1,299
-2,836
| -69% | -$218K |
|
1295
Horizon Technology Finance
HRZN
$291M
| $100K | ﹤0.01% |
+7,583
| New | +$100K |
|
1296
Universal Display
OLED
$6.49B
| $100K | ﹤0.01% |
437
-1,639
| -79% | -$375K |
|
1297
Qiagen
QGEN
$9.82B
| $100K | ﹤0.01% |
+1,787
| New | +$100K |
|
|
SUNW
1298
DELISTED
Sunworks, Inc.
SUNW
| $100K | ﹤0.01% |
+19,576
| New | +$100K |
|
1299
Direxion Daily Healthcare Bull 3X Shares
CURE
$167M
| $99K | ﹤0.01% |
+1,293
| New | +$99K |
|
1300
Highwoods Properties
HIW
$3.5B
| $99K | ﹤0.01% |
2,517
-4,447
| -64% | -$175K |
|