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 |
Amazon
AMZN
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
POLY
1076
DELISTED
Plantronics, Inc.
POLY
| $54K | ﹤0.01% |
1,036
+408
| +65% | +$21.3K |
|
|
LGCY
1077
DELISTED
Legacy Reserves Inc. Common Stock
LGCY
| $54K | ﹤0.01% |
37,444
+21,060
| +129% | +$30.4K |
|
|
KEYW
1078
DELISTED
The KEYW Holding Corporation
KEYW
| $54K | ﹤0.01% |
+5,850
| New | +$54K |
|
|
AAWW
1079
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $53K | ﹤0.01% |
+1,020
| New | +$53K |
|
|
VRN
1080
DELISTED
Veren
VRN
| $53K | ﹤0.01% |
7,018
-3,480
| -33% | -$26.3K |
|
|
MR
1081
DELISTED
Montage Resources Corporation Common Stock
MR
| $53K | ﹤0.01% |
1,239
+881
| +246% | +$37.7K |
|
1082
Copel
ELP
$6.84B
| $52K | ﹤0.01% |
17,823
+17,785
| +46,803% | +$51.9K |
|
1083
ReposiTrak
TRAK
$306M
| $52K | ﹤0.01% |
4,296
-1,726
| -29% | -$20.9K |
|
1084
Vital Energy
VTLE
$647M
| $52K | ﹤0.01% |
+248
| New | +$52K |
|
1085
Genesco
GCO
$355M
| $51K | ﹤0.01% |
1,519
-1,553
| -51% | -$52.1K |
|
1086
Geron
GERN
$842M
| $51K | ﹤0.01% |
18,628
+1,884
| +11% | +$5.16K |
|
1087
iShares Core S&P 500 ETF
IVV
$675B
| $51K | ﹤0.01% |
211
-2,674
| -93% | -$646K |
|
1088
Permian Resources
PR
$9.99B
| $51K | ﹤0.01% |
3,258
+2,345
| +257% | +$36.7K |
|
1089
Sonida Senior Living
SNDA
$492M
| $51K | ﹤0.01% |
225
+165
| +275% | +$37.4K |
|
1090
United States Natural Gas Fund
UNG
$576M
| $51K | ﹤0.01% |
471
-1,213
| -72% | -$131K |
|
|
IXYS
1091
DELISTED
IXYS Corp
IXYS
| $51K | ﹤0.01% |
3,107
-15,424
| -83% | -$253K |
|
1092
Amphastar Pharmaceuticals
AMPH
$1.32B
| $50K | ﹤0.01% |
+2,844
| New | +$50K |
|
1093
Hain Celestial
HAIN
$176M
| $50K | ﹤0.01% |
+1,300
| New | +$50K |
|
1094
Nordic American Tanker
NAT
$675M
| $50K | ﹤0.01% |
8,002
+4,746
| +146% | +$29.7K |
|
|
ANFI
1095
DELISTED
AMIRA NATURE FOODS LTD
ANFI
| $50K | ﹤0.01% |
9,027
+8,030
| +805% | +$44.5K |
|
|
POT
1096
DELISTED
Potash Corp Of Saskatchewan
POT
| $50K | ﹤0.01% |
3,096
-53,531
| -95% | -$865K |
|
1097
Pixelworks
PXLW
$61.5M
| $49K | ﹤0.01% |
898
+611
| +213% | +$33.3K |
|
1098
Ryder
R
$7.61B
| $49K | ﹤0.01% |
+684
| New | +$49K |
|
1099
UNIFI
UFI
$83M
| $49K | ﹤0.01% |
+1,612
| New | +$49K |
|
|
BLCM
1100
DELISTED
Bellicum Pharmaceuticals, Inc.
BLCM
| $49K | ﹤0.01% |
420
-373
| -47% | -$43.5K |
|