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 |
Apple
AAPL
|
+$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$38.8M |
| 4 |
Amazon
AMZN
|
+$38.6M |
| 5 |
Tesla
TSLA
|
+$36M |
Top Sells
| 1 |
Alibaba
BABA
|
+$46.4M |
| 2 |
Boeing
BA
|
+$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
NVIDIA
NVDA
|
+$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1476
American States Water
AWR
$2.82B
| $20K | ﹤0.01% |
+241
| New | +$20K |
|
1477
MarineMax
HZO
$545M
| $20K | ﹤0.01% |
1,220
-4,611
| -79% | -$75.6K |
|
1478
Standard BioTools
LAB
$508M
| $20K | ﹤0.01% |
5,894
-1,566
| -21% | -$5.31K |
|
1479
Resources Connection
RGP
$167M
| $20K | ﹤0.01% |
1,258
+671
| +114% | +$10.7K |
|
1480
Surgery Partners
SGRY
$2.75B
| $20K | ﹤0.01% |
+1,281
| New | +$20K |
|
1481
Health Care Select Sector SPDR Fund
XLV
$34.6B
| $20K | ﹤0.01% |
+200
| New | +$20K |
|
|
IDEX
1482
DELISTED
Ideanomics, Inc. Common Stock
IDEX
| $20K | ﹤0.01% |
192
+191
| +19,100% | +$19.9K |
|
|
SMED
1483
DELISTED
Sharps Compliance Corp
SMED
| $20K | ﹤0.01% |
+4,804
| New | +$20K |
|
|
RUSS
1484
DELISTED
Direxion Daily Russia Bear 3x Shares
RUSS
| $20K | ﹤0.01% |
2,973
-2,128
| -42% | -$14.3K |
|
1485
Ameren
AEE
$27.1B
| $19K | ﹤0.01% |
+259
| New | +$19K |
|
1486
Apogee Enterprises
APOG
$896M
| $19K | ﹤0.01% |
+586
| New | +$19K |
|
1487
Barrett Business Services
BBSI
$1.18B
| $19K | ﹤0.01% |
848
-352
| -29% | -$7.89K |
|
1488
StealthGas
GASS
$272M
| $19K | ﹤0.01% |
5,546
+5,402
| +3,751% | +$18.5K |
|
1489
The Greenbrier Companies
GBX
$1.42B
| $19K | ﹤0.01% |
596
-1,865
| -76% | -$59.5K |
|
1490
Helix Energy Solutions
HLX
$932M
| $19K | ﹤0.01% |
+2,069
| New | +$19K |
|
1491
JB Hunt Transport Services
JBHT
$13.3B
| $19K | ﹤0.01% |
+167
| New | +$19K |
|
1492
Kosmos Energy
KOS
$827M
| $19K | ﹤0.01% |
3,497
+1,097
| +46% | +$5.96K |
|
1493
RB Global
RBA
$22B
| $19K | ﹤0.01% |
443
+442
| +44,200% | +$19K |
|
|
RESN
1494
DELISTED
Resonant Inc.
RESN
| $19K | ﹤0.01% |
7,911
-7,183
| -48% | -$17.3K |
|
|
YGYI
1495
DELISTED
Youngevity International, Inc Common Stock
YGYI
| $19K | ﹤0.01% |
+6,103
| New | +$19K |
|
|
DO
1496
DELISTED
Diamond Offshore Drilling
DO
| $19K | ﹤0.01% |
+2,737
| New | +$19K |
|
1497
China Yuchai International
CYD
$1.39B
| $18K | ﹤0.01% |
1,370
+1,207
| +740% | +$15.9K |
|
1498
Anywhere Real Estate
HOUS
$763M
| $18K | ﹤0.01% |
+1,890
| New | +$18K |
|
1499
HealthStream
HSTM
$839M
| $18K | ﹤0.01% |
676
+626
| +1,252% | +$16.7K |
|
1500
NN Inc
NNBR
$121M
| $18K | ﹤0.01% |
2,014
+1,258
| +166% | +$11.2K |
|