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 |
NVIDIA
NVDA
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CMPS
1051
Compass Pathways
CMPS
$499M
| $129K | ﹤0.01% |
21,492
+17,158
| +396% | +$103K |
|
1052
Capri Holdings
CPRI
$2.43B
| $129K | ﹤0.01% |
+3,924
| New | +$129K |
|
1053
KB Home
KBH
$4.48B
| $129K | ﹤0.01% |
+1,849
| New | +$129K |
|
1054
Provident Bancorp
PVBC
$226M
| $129K | ﹤0.01% |
12,717
+11,606
| +1,045% | +$118K |
|
1055
Marqeta
MQ
$2.61B
| $128K | ﹤0.01% |
23,514
-6,438
| -21% | -$35K |
|
1056
ProShares UltraShort Russell2000
TWM
$33.7M
| $128K | ﹤0.01% |
2,296
+580
| +34% | +$32.3K |
|
1057
Delcath Systems
DCTH
$379M
| $127K | ﹤0.01% |
15,279
+4,342
| +40% | +$36.1K |
|
1058
Gartner
IT
$18.7B
| $127K | ﹤0.01% |
+285
| New | +$127K |
|
1059
Lamar Advertising Co
LAMR
$12.9B
| $127K | ﹤0.01% |
1,068
-16,429
| -94% | -$1.95M |
|
1060
First Trust NASDAQ-100 Technology Index Fund
QTEC
$2.73B
| $127K | ﹤0.01% |
+645
| New | +$127K |
|
|
NGD
1061
New Gold Inc
NGD
$5.16B
| $126K | ﹤0.01% |
65,042
+29,106
| +81% | +$56.4K |
|
1062
Merchants Bancorp
MBIN
$1.5B
| $125K | ﹤0.01% |
3,103
-1,529
| -33% | -$61.6K |
|
1063
Rocket Pharmaceuticals
RCKT
$341M
| $125K | ﹤0.01% |
+5,825
| New | +$125K |
|
1064
Safe Bulkers
SB
$466M
| $124K | ﹤0.01% |
+21,413
| New | +$124K |
|
|
SKE
1065
Skeena Resources
SKE
$2.02B
| $124K | ﹤0.01% |
23,096
+12,080
| +110% | +$64.9K |
|
1066
BARK
BARK
$150M
| $123K | ﹤0.01% |
68,178
+3,754
| +6% | +$6.77K |
|
1067
Relmada Therapeutics
RLMD
$52.8M
| $123K | ﹤0.01% |
41,270
-5,443
| -12% | -$16.2K |
|
1068
Vulcan Materials
VMC
$39B
| $123K | ﹤0.01% |
+495
| New | +$123K |
|
|
NVEI
1069
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $123K | ﹤0.01% |
3,824
-91,543
| -96% | -$2.94M |
|
|
ETRN
1070
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $123K | ﹤0.01% |
9,504
-184,641
| -95% | -$2.39M |
|
1071
Merus
MRUS
$5.26B
| $122K | ﹤0.01% |
2,073
+170
| +9% | +$10K |
|
1072
Calix
CALX
$4.01B
| $122K | ﹤0.01% |
3,464
+396
| +13% | +$13.9K |
|
1073
Global X Russell 2000 Covered Call ETF
RYLD
$1.27B
| $122K | ﹤0.01% |
+7,668
| New | +$122K |
|
|
AIV
1074
Aimco
AIV
$1.07B
| $121K | ﹤0.01% |
14,647
-24,920
| -63% | -$206K |
|
1075
Avantis US Small Cap Value ETF
AVUV
$18.3B
| $121K | ﹤0.01% |
1,351
+423
| +46% | +$37.9K |
|