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 |
Apple
AAPL
|
+$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$38.8M |
| 4 |
Amazon
AMZN
|
+$38.6M |
| 5 |
Tesla
TSLA
|
+$36M |
Top Sells
| 1 |
Alibaba
BABA
|
+$46.4M |
| 2 |
Boeing
BA
|
+$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
NVIDIA
NVDA
|
+$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
Aegon
AEG
$12B
| $155K | ﹤0.01% |
37,102
-2,709
| -7% | -$11.3K |
|
827
Cooper Companies
COO
$13.7B
| $155K | ﹤0.01% |
1,936
-4,948
| -72% | -$396K |
|
828
ProShares UltraShort Euro
EUO
$33.7M
| $154K | ﹤0.01% |
+5,751
| New | +$154K |
|
829
Federal Signal
FSS
$7.59B
| $154K | ﹤0.01% |
4,777
+481
| +11% | +$15.5K |
|
830
Globe Life
GL
$11.4B
| $154K | ﹤0.01% |
+1,466
| New | +$154K |
|
831
VanEck Rare Earth/Strategic Metals ETF
REMX
$744M
| $154K | ﹤0.01% |
3,839
-3,783
| -50% | -$152K |
|
832
Regions Financial
RF
$24.1B
| $154K | ﹤0.01% |
+9,000
| New | +$154K |
|
833
SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.86B
| $154K | ﹤0.01% |
+5,732
| New | +$154K |
|
|
LMRK
834
DELISTED
Landmark Infrastructure Partners LP Common Units
LMRK
| $154K | ﹤0.01% |
+9,445
| New | +$154K |
|
835
Gaotu Techedu
GOTU
$887M
| $153K | ﹤0.01% |
+7,022
| New | +$153K |
|
836
Levi Strauss
LEVI
$8.59B
| $153K | ﹤0.01% |
+7,968
| New | +$153K |
|
837
Invesco DB US Dollar Index Bearish Fund
UDN
$146M
| $152K | ﹤0.01% |
7,428
+3,900
| +111% | +$79.8K |
|
838
ProShares Ultra Energy
DIG
$69.9M
| $151K | ﹤0.01% |
4,740
| – | – |
|
839
ING
ING
$71B
| $151K | ﹤0.01% |
12,602
-47,881
| -79% | -$574K |
|
840
Trex
TREX
$6.77B
| $151K | ﹤0.01% |
+3,368
| New | +$151K |
|
841
Huntington Bancshares
HBAN
$25.7B
| $150K | ﹤0.01% |
10,000
-20,633
| -67% | -$309K |
|
842
Pediatrix Medical
MD
$1.48B
| $150K | ﹤0.01% |
+5,418
| New | +$150K |
|
843
United Therapeutics
UTHR
$18.3B
| $150K | ﹤0.01% |
+1,707
| New | +$150K |
|
|
CAF
844
Morgan Stanley China A Share Fund
CAF
$264M
| $149K | ﹤0.01% |
6,876
+1,166
| +20% | +$25.3K |
|
845
Federal Realty Investment Trust
FRT
$8.78B
| $149K | ﹤0.01% |
1,164
+768
| +194% | +$98.3K |
|
846
iShares Europe ETF
IEV
$2.33B
| $149K | ﹤0.01% |
3,191
-179
| -5% | -$8.36K |
|
847
Interpublic Group of Companies
IPG
$9.89B
| $149K | ﹤0.01% |
6,485
+820
| +14% | +$18.8K |
|
848
Titan Machinery
TITN
$492M
| $149K | ﹤0.01% |
+10,087
| New | +$149K |
|
|
AVTA
849
DELISTED
Avantax, Inc. Common Stock
AVTA
| $148K | ﹤0.01% |
+5,689
| New | +$148K |
|
850
Team
TISI
$87.6M
| $147K | ﹤0.01% |
926
+293
| +46% | +$46.5K |
|