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 |
Invesco QQQ Trust
QQQ
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
Kodak
KODK
$464M
| $49K | ﹤0.01% |
+16,805
| New | +$49K |
|
1102
Oceaneering
OII
$2.45B
| $49K | ﹤0.01% |
+3,131
| New | +$49K |
|
1103
Allegion
ALLE
$14.6B
| $48K | ﹤0.01% |
+534
| New | +$48K |
|
1104
Covenant Logistics
CVLG
$575M
| $48K | ﹤0.01% |
5,092
+4,206
| +475% | +$39.6K |
|
1105
Protolabs
PRLB
$1.17B
| $48K | ﹤0.01% |
462
-1,367
| -75% | -$142K |
|
|
WFT
1106
DELISTED
Weatherford International plc
WFT
| $48K | ﹤0.01% |
68,870
+58,936
| +593% | +$41.1K |
|
1107
Arbor Realty Trust
ABR
$2.26B
| $47K | ﹤0.01% |
3,692
+3,026
| +454% | +$38.5K |
|
1108
Energy Recovery
ERII
$776M
| $47K | ﹤0.01% |
5,482
+4,698
| +599% | +$40.3K |
|
1109
Polaris
PII
$3.29B
| $47K | ﹤0.01% |
+563
| New | +$47K |
|
1110
Semtech
SMTC
$5.36B
| $47K | ﹤0.01% |
+928
| New | +$47K |
|
|
CNR
1111
DELISTED
Cornerstone Building Brands, Inc.
CNR
| $47K | ﹤0.01% |
+7,652
| New | +$47K |
|
1112
Autoliv
ALV
$9.63B
| $46K | ﹤0.01% |
630
-6,869
| -92% | -$502K |
|
1113
Imunon
IMNN
$14.1M
| $46K | ﹤0.01% |
122
-30
| -20% | -$11.3K |
|
1114
Standard BioTools
LAB
$489M
| $46K | ﹤0.01% |
+3,497
| New | +$46K |
|
1115
Limoneira
LMNR
$269M
| $46K | ﹤0.01% |
+1,980
| New | +$46K |
|
1116
Vishay Intertechnology
VSH
$2.07B
| $46K | ﹤0.01% |
2,542
+816
| +47% | +$14.8K |
|
1117
Dayforce
DAY
$10.9B
| $46K | ﹤0.01% |
+899
| New | +$46K |
|
|
BPMP
1118
DELISTED
BP Midstream Partners LP Common Units representing Limited Partner Interests
BPMP
| $46K | ﹤0.01% |
3,186
+2,977
| +1,424% | +$43K |
|
|
BMCH
1119
DELISTED
BMC Stock Holdings, Inc
BMCH
| $46K | ﹤0.01% |
2,632
-7,646
| -74% | -$134K |
|
1120
Cemex
CX
$13.3B
| $45K | ﹤0.01% |
9,846
+247
| +3% | +$1.13K |
|
1121
Henry Schein
HSIC
$8.17B
| $45K | ﹤0.01% |
752
-5,521
| -88% | -$330K |
|
1122
iShares International Select Dividend ETF
IDV
$5.83B
| $45K | ﹤0.01% |
1,469
+869
| +145% | +$26.6K |
|
1123
MDU Resources
MDU
$3.36B
| $45K | ﹤0.01% |
+4,681
| New | +$45K |
|
|
SAFE
1124
Safehold
SAFE
$1.15B
| $45K | ﹤0.01% |
1,115
+1,103
| +9,192% | +$44.5K |
|
|
GCI
1125
DELISTED
Gannett Co., Inc
GCI
| $45K | ﹤0.01% |
4,318
-3,413
| -44% | -$35.6K |
|