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 | |
|---|---|---|---|---|---|---|
851
Zumiez
ZUMZ
$357M
| $111K | ﹤0.01% |
4,484
-268
| -6% | -$6.63K |
|
|
GTT
852
DELISTED
GTT Communications, Inc.
GTT
| $111K | ﹤0.01% |
+3,207
| New | +$111K |
|
|
CMCM
853
Cheetah Mobile
CMCM
$230M
| $110K | ﹤0.01% |
3,454
+2,876
| +498% | +$91.6K |
|
854
Extra Space Storage
EXR
$30.8B
| $110K | ﹤0.01% |
+1,081
| New | +$110K |
|
855
Genworth Financial
GNW
$3.5B
| $110K | ﹤0.01% |
28,862
+28,125
| +3,816% | +$107K |
|
856
Insteel Industries
IIIN
$742M
| $110K | ﹤0.01% |
+5,266
| New | +$110K |
|
857
Newmark Group
NMRK
$3.33B
| $110K | ﹤0.01% |
13,203
-8,413
| -39% | -$70.1K |
|
858
Turning Point Brands
TPB
$1.76B
| $110K | ﹤0.01% |
+2,387
| New | +$110K |
|
859
SPDR S&P Semiconductor ETF
XSD
$1.47B
| $110K | ﹤0.01% |
1,411
+989
| +234% | +$77.1K |
|
|
GLIBA
860
DELISTED
GCI Liberty, Inc. Class A Common Stock (DE)
GLIBA
| $110K | ﹤0.01% |
1,985
-2,132
| -52% | -$118K |
|
861
Cenovus Energy
CVE
$30.5B
| $109K | ﹤0.01% |
+12,657
| New | +$109K |
|
862
Group 1 Automotive
GPI
$6.11B
| $109K | ﹤0.01% |
1,695
+682
| +67% | +$43.9K |
|
863
First Financial Bancorp
FFBC
$2.48B
| $108K | ﹤0.01% |
+4,502
| New | +$108K |
|
864
iShares Russell Mid-Cap ETF
IWR
$44.5B
| $108K | ﹤0.01% |
+2,002
| New | +$108K |
|
865
National Health Investors
NHI
$3.7B
| $108K | ﹤0.01% |
1,385
-915
| -40% | -$71.4K |
|
866
GrafTech
EAF
$207M
| $107K | ﹤0.01% |
838
-4,621
| -85% | -$590K |
|
867
Xylem
XYL
$33.5B
| $107K | ﹤0.01% |
1,362
+178
| +15% | +$14K |
|
|
AY
868
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $107K | ﹤0.01% |
5,504
+4,770
| +650% | +$92.7K |
|
869
SM Energy
SM
$3.14B
| $106K | ﹤0.01% |
6,076
+5,439
| +854% | +$94.9K |
|
|
IO
870
DELISTED
ION Geophysical Corporation
IO
| $106K | ﹤0.01% |
7,359
+7,312
| +15,557% | +$105K |
|
|
CHIX
871
DELISTED
Global X MSCI China Financials ETF
CHIX
| $106K | ﹤0.01% |
6,163
+5,930
| +2,545% | +$102K |
|
872
Inseego
INSG
$200M
| $105K | ﹤0.01% |
2,243
-1,694
| -43% | -$79.3K |
|
873
KraneShares Bosera MSCI China A 50 Connect Index ETF
KBA
$233M
| $105K | ﹤0.01% |
3,322
+2,864
| +625% | +$90.5K |
|
874
Outfront Media
OUT
$3.11B
| $105K | ﹤0.01% |
4,577
+425
| +10% | +$9.75K |
|
|
ARQL
875
DELISTED
Arqule Inc
ARQL
| $105K | ﹤0.01% |
21,930
-20,426
| -48% | -$97.8K |
|