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 | |
|---|---|---|---|---|---|---|
876
Heritage Commerce
HTBK
$630M
| $56K | ﹤0.01% |
5,172
+3,213
| +164% | +$34.8K |
|
877
Sabra Healthcare REIT
SBRA
$4.54B
| $55K | ﹤0.01% |
+2,187
| New | +$55K |
|
878
Unisys
UIS
$276M
| $55K | ﹤0.01% |
5,664
-321
| -5% | -$3.12K |
|
879
Webster Financial
WBS
$10.2B
| $55K | ﹤0.01% |
1,458
-481
| -25% | -$18.1K |
|
|
LCI
880
DELISTED
Lannett Company, Inc.
LCI
| $55K | ﹤0.01% |
525
-698
| -57% | -$73.1K |
|
881
Global Partners
GLP
$1.77B
| $54K | ﹤0.01% |
3,361
-1,895
| -36% | -$30.4K |
|
|
NOAH
882
Noah Holdings
NOAH
$787M
| $54K | ﹤0.01% |
2,097
+622
| +42% | +$16K |
|
883
Rocket Pharmaceuticals
RCKT
$343M
| $54K | ﹤0.01% |
1,426
-6,190
| -81% | -$234K |
|
884
XBiotech
XBIT
$85.4M
| $54K | ﹤0.01% |
+4,086
| New | +$54K |
|
|
BKS
885
DELISTED
Barnes & Noble
BKS
| $54K | ﹤0.01% |
+4,833
| New | +$54K |
|
|
PNK
886
DELISTED
Pinnacle Entertainment Inc.
PNK
| $54K | ﹤0.01% |
4,429
-2,768
| -38% | -$33.7K |
|
887
Apogee Enterprises
APOG
$896M
| $53K | ﹤0.01% |
1,207
-830
| -41% | -$36.4K |
|
888
Geron
GERN
$823M
| $53K | ﹤0.01% |
23,834
+7,737
| +48% | +$17.2K |
|
889
Seres Therapeutics
MCRB
$154M
| $53K | ﹤0.01% |
+219
| New | +$53K |
|
890
Toll Brothers
TOL
$13.8B
| $53K | ﹤0.01% |
1,803
+844
| +88% | +$24.8K |
|
|
ACET
891
DELISTED
Aceto Corp
ACET
| $53K | ﹤0.01% |
2,821
+2,721
| +2,721% | +$51.1K |
|
892
Arbor Realty Trust
ABR
$2.26B
| $52K | ﹤0.01% |
+7,054
| New | +$52K |
|
893
Clearfield
CLFD
$456M
| $52K | ﹤0.01% |
2,811
-4,334
| -61% | -$80.2K |
|
894
ProShares Ultra Financials
UYG
$865M
| $52K | ﹤0.01% |
+2,157
| New | +$52K |
|
|
LMIA
895
DELISTED
LMI Aerospace Inc
LMIA
| $52K | ﹤0.01% |
+7,410
| New | +$52K |
|
|
TRCO
896
DELISTED
TRIBUNE MEDIA COMPANY CLASS A
TRCO
| $52K | ﹤0.01% |
+1,440
| New | +$52K |
|
897
GoDaddy
GDDY
$20.1B
| $51K | ﹤0.01% |
+1,494
| New | +$51K |
|
898
Sturm, Ruger & Co
RGR
$587M
| $51K | ﹤0.01% |
885
-1,573
| -64% | -$90.6K |
|
899
Vanguard Mid-Cap ETF
VO
$87.4B
| $51K | ﹤0.01% |
+400
| New | +$51K |
|
|
CXO
900
DELISTED
CONCHO RESOURCES INC.
CXO
| $51K | ﹤0.01% |
377
-3,126
| -89% | -$423K |
|