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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MTLS
1826
Materialise
MTLS
$327M
| $16K | ﹤0.01% |
1,522
-1,719
| -53% | -$18.1K |
|
1827
NeoGenomics
NEO
$1.11B
| $16K | ﹤0.01% |
1,910
-5,085
| -73% | -$42.6K |
|
|
OGI
1828
Organigram Holdings
OGI
$252M
| $16K | ﹤0.01% |
+4,597
| New | +$16K |
|
1829
SKYX Platforms
SKYX
$145M
| $16K | ﹤0.01% |
4,483
+4,088
| +1,035% | +$14.6K |
|
1830
Synchrony
SYF
$28.5B
| $16K | ﹤0.01% |
574
-15,222
| -96% | -$424K |
|
1831
iShares TIPS Bond ETF
TIP
$14B
| $16K | ﹤0.01% |
155
-117,323
| -100% | -$12.1M |
|
1832
Turkcell
TKC
$5.14B
| $16K | ﹤0.01% |
6,294
+2,858
| +83% | +$7.27K |
|
1833
Full Truck Alliance
YMM
$14.4B
| $16K | ﹤0.01% |
+2,454
| New | +$16K |
|
|
AIFF
1834
Firefly Neuroscience, Inc. Common Stock
AIFF
$39.8M
| $16K | ﹤0.01% |
559
+245
| +78% | +$7.01K |
|
|
TBNK
1835
DELISTED
Territorial Bancorp Inc.
TBNK
| $16K | ﹤0.01% |
877
+453
| +107% | +$8.27K |
|
|
BMTX
1836
DELISTED
BM Technologies, Inc.
BMTX
| $16K | ﹤0.01% |
+2,511
| New | +$16K |
|
|
EXAI
1837
DELISTED
Exscientia Plc American Depositary Shares
EXAI
| $16K | ﹤0.01% |
1,995
+607
| +44% | +$4.87K |
|
|
CELL
1838
DELISTED
PhenomeX Inc. Common Stock
CELL
| $16K | ﹤0.01% |
5,823
-18,676
| -76% | -$51.3K |
|
|
CPUH
1839
DELISTED
Compute Health Acquisition Corp.
CPUH
| $16K | ﹤0.01% |
+1,701
| New | +$16K |
|
|
AAT
1840
American Assets Trust
AAT
$1.28B
| $15K | ﹤0.01% |
589
+469
| +391% | +$11.9K |
|
1841
Aclaris Therapeutics
ACRS
$211M
| $15K | ﹤0.01% |
+972
| New | +$15K |
|
1842
InfraCap MLP ETF
AMZA
$406M
| $15K | ﹤0.01% |
+536
| New | +$15K |
|
1843
Cabaletta Bio
CABA
$199M
| $15K | ﹤0.01% |
24,310
+19,851
| +445% | +$12.2K |
|
1844
Flotek Industries
FTK
$388M
| $15K | ﹤0.01% |
2,652
+2,286
| +625% | +$12.9K |
|
1845
Hoya Capital Housing ETF
HOMZ
$37.3M
| $15K | ﹤0.01% |
500
-5,600
| -92% | -$168K |
|
1846
Hydrofarm Holdings
HYFM
$15.1M
| $15K | ﹤0.01% |
+779
| New | +$15K |
|
1847
Limbach Holdings
LMB
$1.2B
| $15K | ﹤0.01% |
2,031
-5,199
| -72% | -$38.4K |
|
1848
NovoCure
NVCR
$1.45B
| $15K | ﹤0.01% |
198
-1,370
| -87% | -$104K |
|
1849
News Corp Class A
NWSA
$17.2B
| $15K | ﹤0.01% |
1,030
+830
| +415% | +$12.1K |
|
1850
Phreesia
PHR
$1.45B
| $15K | ﹤0.01% |
607
-4,080
| -87% | -$101K |
|