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
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LMNX
1076
DELISTED
Luminex Corp
LMNX
| $171K | ﹤0.01% |
7,431
+2,049
| +38% | +$47.2K |
|
1077
FuelCell Energy
FCEL
$209M
| $170K | ﹤0.01% |
508
-5,916
| -92% | -$1.98M |
|
1078
VanEck Agribusiness ETF
MOO
$630M
| $170K | ﹤0.01% |
2,191
-109
| -5% | -$8.46K |
|
1079
Sprout Social
SPT
$816M
| $170K | ﹤0.01% |
3,754
-6,885
| -65% | -$312K |
|
|
ENG
1080
DELISTED
ENGlobal Corp
ENG
| $169K | ﹤0.01% |
6,617
+6,024
| +1,016% | +$154K |
|
|
DRD
1081
DRDGold
DRD
$1.97B
| $168K | ﹤0.01% |
14,387
-7,888
| -35% | -$92.1K |
|
1082
Greif
GEF
$3.54B
| $168K | ﹤0.01% |
3,592
-2,542
| -41% | -$119K |
|
1083
Meritage Homes
MTH
$5.77B
| $168K | ﹤0.01% |
4,066
-2,220
| -35% | -$91.7K |
|
1084
Old Dominion Freight Line
ODFL
$30.7B
| $167K | ﹤0.01% |
+1,716
| New | +$167K |
|
1085
Omnicom Group
OMC
$14.7B
| $167K | ﹤0.01% |
2,682
-2,830
| -51% | -$176K |
|
1086
Douglas Emmett
DEI
$2.75B
| $166K | ﹤0.01% |
5,699
-19,245
| -77% | -$561K |
|
1087
Invesco Solar ETF
TAN
$727M
| $166K | ﹤0.01% |
+1,622
| New | +$166K |
|
1088
Roper Technologies
ROP
$55.2B
| $165K | ﹤0.01% |
384
-1,465
| -79% | -$629K |
|
|
MIC
1089
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $165K | ﹤0.01% |
4,408
-2,008
| -31% | -$75.2K |
|
|
XLRN
1090
DELISTED
Acceleron Pharma Inc.
XLRN
| $165K | ﹤0.01% |
1,292
+880
| +214% | +$112K |
|
|
ORBC
1091
DELISTED
ORBCOMM, Inc.
ORBC
| $165K | ﹤0.01% |
22,299
+14,823
| +198% | +$110K |
|
1092
Element Solutions
ESI
$6.24B
| $164K | ﹤0.01% |
+9,278
| New | +$164K |
|
1093
iShares Core MSCI Emerging Markets ETF
IEMG
$106B
| $164K | ﹤0.01% |
2,653
+2,252
| +562% | +$139K |
|
1094
MSC Industrial Direct
MSM
$5.1B
| $164K | ﹤0.01% |
+1,953
| New | +$164K |
|
|
AHH
1095
Armada Hoffler Properties
AHH
$576M
| $163K | ﹤0.01% |
14,532
+1,790
| +14% | +$20.1K |
|
1096
Cadiz
CDZI
$295M
| $163K | ﹤0.01% |
15,384
+9,195
| +149% | +$97.4K |
|
1097
Choice Hotels
CHH
$5.2B
| $163K | ﹤0.01% |
+1,529
| New | +$163K |
|
1098
Gossamer Bio
GOSS
$787M
| $163K | ﹤0.01% |
16,906
+5,017
| +42% | +$48.4K |
|
1099
SL Green Realty
SLG
$4.5B
| $163K | ﹤0.01% |
2,669
-5,593
| -68% | -$342K |
|
|
FLXN
1100
DELISTED
Flexion Therapeutics, Inc.
FLXN
| $163K | ﹤0.01% |
14,164
+8,499
| +150% | +$97.8K |
|