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 |
Gilead Sciences
GILD
|
+$16.8M |
| 2 |
Apple
AAPL
|
+$16.2M |
| 3 |
Booking.com
BKNG
|
+$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$15.3M |
| 5 |
Wells Fargo
WFC
|
+$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MTSC
851
DELISTED
MTS Systems Corp
MTSC
| $62K | ﹤0.01% |
1,348
-568
| -30% | -$26.1K |
|
852
Chemed
CHE
$6.57B
| $61K | ﹤0.01% |
+434
| New | +$61K |
|
853
Synchrony
SYF
$27.8B
| $61K | ﹤0.01% |
2,212
-27,039
| -92% | -$746K |
|
854
Travel + Leisure Co
TNL
$4B
| $61K | ﹤0.01% |
2,038
-8,773
| -81% | -$263K |
|
|
PE
855
DELISTED
PARSLEY ENERGY INC
PE
| $61K | ﹤0.01% |
+1,826
| New | +$61K |
|
856
Anika Therapeutics
ANIK
$121M
| $60K | ﹤0.01% |
+1,267
| New | +$60K |
|
857
Dorchester Minerals
DMLP
$1.2B
| $60K | ﹤0.01% |
3,956
+1,406
| +55% | +$21.3K |
|
858
Edison International
EIX
$21.4B
| $60K | ﹤0.01% |
831
-2,146
| -72% | -$155K |
|
859
United States Gasoline Fund
UGA
$78M
| $60K | ﹤0.01% |
2,193
-2,108
| -49% | -$57.7K |
|
|
DFT
860
DELISTED
DuPont Fabros Technology Inc.
DFT
| $60K | ﹤0.01% |
1,473
+888
| +152% | +$36.2K |
|
|
DISCA
861
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $60K | ﹤0.01% |
+2,254
| New | +$60K |
|
|
BEAT
862
DELISTED
BioTelemetry, Inc.
BEAT
| $60K | ﹤0.01% |
3,249
-2,341
| -42% | -$43.2K |
|
863
Lazard
LAZ
$5.25B
| $59K | ﹤0.01% |
1,643
-395
| -19% | -$14.2K |
|
864
Universal Corp
UVV
$1.38B
| $59K | ﹤0.01% |
+1,022
| New | +$59K |
|
|
CRR
865
DELISTED
Carbo Ceramics Inc.
CRR
| $59K | ﹤0.01% |
5,451
-9,694
| -64% | -$105K |
|
866
Cardiff Oncology
CRDF
$136M
| $58K | ﹤0.01% |
181
-36
| -17% | -$11.5K |
|
867
iShares International Select Dividend ETF
IDV
$5.83B
| $58K | ﹤0.01% |
+1,959
| New | +$58K |
|
868
KraneShares CSI China Internet ETF
KWEB
$8.87B
| $58K | ﹤0.01% |
1,415
+153
| +12% | +$6.27K |
|
|
CONE
869
DELISTED
CyrusOne Inc Common Stock
CONE
| $58K | ﹤0.01% |
+1,220
| New | +$58K |
|
|
BRS
870
DELISTED
Bristow Group, Inc.
BRS
| $58K | ﹤0.01% |
+4,190
| New | +$58K |
|
|
BTCM
871
BIT Mining
BTCM
$49.2M
| $57K | ﹤0.01% |
325
-211
| -39% | -$37K |
|
872
Royal Gold
RGLD
$12.3B
| $57K | ﹤0.01% |
744
-1,964
| -73% | -$150K |
|
873
Ternium
TX
$6.69B
| $57K | ﹤0.01% |
+2,914
| New | +$57K |
|
|
IVAC
874
DELISTED
Intevac Inc
IVAC
| $57K | ﹤0.01% |
9,699
+2,092
| +28% | +$12.3K |
|
875
Deluxe
DLX
$858M
| $56K | ﹤0.01% |
+852
| New | +$56K |
|