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
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SEAC
1501
DELISTED
Seachange International Inc
SEAC
| $40K | ﹤0.01% |
3,315
-1,945
| -37% | -$23.5K |
|
|
USER
1502
DELISTED
UserTesting, Inc.
USER
| $40K | ﹤0.01% |
+8,036
| New | +$40K |
|
|
CFRX
1503
DELISTED
ContraFect Corporation
CFRX
| $40K | ﹤0.01% |
+164
| New | +$40K |
|
|
LAC
1504
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $40K | ﹤0.01% |
2,020
-83,759
| -98% | -$1.66M |
|
|
AHH
1505
Armada Hoffler Properties
AHH
$596M
| $39K | ﹤0.01% |
3,112
+1,739
| +127% | +$21.8K |
|
|
BKYI
1506
BIO-key International
BKYI
$5.29M
| $39K | ﹤0.01% |
1,233
+933
| +311% | +$29.5K |
|
1507
Descartes Systems
DSGX
$8.96B
| $39K | ﹤0.01% |
629
+33
| +6% | +$2.05K |
|
1508
Essent Group
ESNT
$6.29B
| $39K | ﹤0.01% |
1,018
-1,509
| -60% | -$57.8K |
|
1509
iShares US Oil Equipment & Services ETF
IEZ
$113M
| $39K | ﹤0.01% |
2,485
-3,630
| -59% | -$57K |
|
|
NEXN
1510
Nexxen International
NEXN
$618M
| $39K | ﹤0.01% |
4,521
+4,092
| +954% | +$35.3K |
|
1511
OFS Capital
OFS
$117M
| $39K | ﹤0.01% |
+3,980
| New | +$39K |
|
1512
Open Text
OTEX
$9.07B
| $39K | ﹤0.01% |
+1,038
| New | +$39K |
|
1513
Radware
RDWR
$1.1B
| $39K | ﹤0.01% |
1,836
-11,141
| -86% | -$237K |
|
1514
Ryvyl
RVYL
$9.53M
| $39K | ﹤0.01% |
3,783
+2,052
| +119% | +$21.2K |
|
1515
Sealed Air
SEE
$4.99B
| $39K | ﹤0.01% |
+684
| New | +$39K |
|
1516
SI-BONE Inc
SIBN
$677M
| $39K | ﹤0.01% |
2,996
-5,258
| -64% | -$68.4K |
|
1517
Worksport
WKSP
$23.4M
| $39K | ﹤0.01% |
2,021
+1,141
| +130% | +$22K |
|
|
ENFN
1518
DELISTED
Enfusion, Inc.
ENFN
| $39K | ﹤0.01% |
+3,862
| New | +$39K |
|
|
CRGE
1519
DELISTED
Charge Enterprises, Inc. Common Stock
CRGE
| $39K | ﹤0.01% |
+8,212
| New | +$39K |
|
|
SEV
1520
DELISTED
Sono Group N.V. Common Shares
SEV
| $39K | ﹤0.01% |
13,556
+195
| +1% | +$561 |
|
1521
Bit Digital
BTBT
$955M
| $38K | ﹤0.01% |
29,193
-30,645
| -51% | -$39.9K |
|
1522
Clearside Biomedical
CLSD
$25.1M
| $38K | ﹤0.01% |
26,461
+18,264
| +223% | +$26.2K |
|
1523
Citius Pharmaceuticals
CTXR
$20.6M
| $38K | ﹤0.01% |
1,694
+1,068
| +171% | +$24K |
|
1524
Limbach Holdings
LMB
$1.23B
| $38K | ﹤0.01% |
7,230
-5,959
| -45% | -$31.3K |
|
1525
NerdWallet
NRDS
$802M
| $38K | ﹤0.01% |
4,822
+2,834
| +143% | +$22.3K |
|