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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1526
ProShares VIX Mid-Term Futures ETF
VIXM
$40.9M
| $31K | ﹤0.01% |
1,861
-5,417
| -74% | -$90.2K |
|
1527
Vanda Pharmaceuticals
VNDA
$267M
| $31K | ﹤0.01% |
7,405
+6,124
| +478% | +$25.6K |
|
|
RPT
1528
Rithm Property Trust Inc.
RPT
$121M
| $31K | ﹤0.01% |
5,946
+2,518
| +73% | +$13.1K |
|
1529
Annexon
ANNX
$290M
| $30K | ﹤0.01% |
6,753
+5,801
| +609% | +$25.8K |
|
1530
iShares Core Total USD Bond Market ETF
IUSB
$34.4B
| $30K | ﹤0.01% |
+660
| New | +$30K |
|
1531
Rani Therapeutics
RANI
$23.1M
| $30K | ﹤0.01% |
9,136
+7,893
| +635% | +$25.9K |
|
|
WSR
1532
Whitestone REIT
WSR
$660M
| $30K | ﹤0.01% |
+2,449
| New | +$30K |
|
|
IRD
1533
Opus Genetics, Inc. Common Stock
IRD
$89.3M
| $30K | ﹤0.01% |
10,029
+2,424
| +32% | +$7.25K |
|
1534
Bally's
BALY
$520M
| $29K | ﹤0.01% |
2,105
+1,650
| +363% | +$22.7K |
|
1535
BioAtla
BCAB
$40.6M
| $29K | ﹤0.01% |
11,926
-25,575
| -68% | -$62.2K |
|
1536
Barnes & Noble Education
BNED
$310M
| $29K | ﹤0.01% |
200
-1,035
| -84% | -$150K |
|
1537
Cognyte Software
CGNT
$622M
| $29K | ﹤0.01% |
4,592
-5,974
| -57% | -$37.7K |
|
1538
Immunome
IMNM
$857M
| $29K | ﹤0.01% |
2,717
-12,222
| -82% | -$130K |
|
1539
Liberty Global Class C
LBTYK
$4.11B
| $29K | ﹤0.01% |
1,596
+1,557
| +3,992% | +$28.3K |
|
1540
Mercury Systems
MRCY
$4.63B
| $29K | ﹤0.01% |
804
-1,067
| -57% | -$38.5K |
|
1541
ProShares Ultra Technology
ROM
$845M
| $29K | ﹤0.01% |
562
-470
| -46% | -$24.3K |
|
1542
Red Robin
RRGB
$118M
| $29K | ﹤0.01% |
2,385
-8,499
| -78% | -$103K |
|
1543
Tootsie Roll Industries
TR
$2.99B
| $29K | ﹤0.01% |
+938
| New | +$29K |
|
1544
Ventyx Biosciences
VTYX
$170M
| $29K | ﹤0.01% |
+12,103
| New | +$29K |
|
1545
Select Water Solutions
WTTR
$1.05B
| $29K | ﹤0.01% |
3,830
-6,210
| -62% | -$47K |
|
1546
Enact Holdings
ACT
$5.66B
| $28K | ﹤0.01% |
+971
| New | +$28K |
|
1547
Invesco CurrencyShares Australian Dollar Trust
FXA
$75.3M
| $28K | ﹤0.01% |
428
-4,097
| -91% | -$268K |
|
1548
Global Net Lease
GNL
$1.8B
| $28K | ﹤0.01% |
2,829
-6,379
| -69% | -$63.1K |
|
1549
Health Catalyst
HCAT
$213M
| $28K | ﹤0.01% |
3,049
+2,302
| +308% | +$21.1K |
|
1550
Jakks Pacific
JAKK
$204M
| $28K | ﹤0.01% |
+791
| New | +$28K |
|