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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
USCR
851
DELISTED
U S Concrete, Inc.
USCR
| $103K | ﹤0.01% |
2,934
+844
| +40% | +$29.6K |
|
852
CNO Financial Group
CNO
$3.83B
| $102K | ﹤0.01% |
+6,888
| New | +$102K |
|
|
QEP
853
DELISTED
QEP RESOURCES, INC.
QEP
| $102K | ﹤0.01% |
18,277
-24,574
| -57% | -$137K |
|
|
TCO
854
DELISTED
Taubman Centers Inc.
TCO
| $102K | ﹤0.01% |
+2,244
| New | +$102K |
|
855
Masimo
MASI
$7.94B
| $101K | ﹤0.01% |
+949
| New | +$101K |
|
856
Teleflex
TFX
$5.86B
| $101K | ﹤0.01% |
394
+304
| +338% | +$77.9K |
|
|
TGP
857
DELISTED
Teekay LNG Partners L.P.
TGP
| $101K | ﹤0.01% |
9,255
-11,860
| -56% | -$129K |
|
|
NRE
858
DELISTED
NorthStar Realty Europe Corp.
NRE
| $101K | ﹤0.01% |
+6,951
| New | +$101K |
|
|
SAFM
859
DELISTED
Sanderson Farms Inc
SAFM
| $100K | ﹤0.01% |
1,015
+479
| +89% | +$47.2K |
|
860
Unisys
UIS
$291M
| $98K | ﹤0.01% |
8,437
-14,993
| -64% | -$174K |
|
861
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.21B
| $98K | ﹤0.01% |
282
-850
| -75% | -$295K |
|
|
NXTM
862
DELISTED
NxStage Medical Inc.
NXTM
| $98K | ﹤0.01% |
3,435
+635
| +23% | +$18.1K |
|
863
Atara Biotherapeutics
ATRA
$85.4M
| $97K | ﹤0.01% |
+113
| New | +$97K |
|
864
Ameren
AEE
$27.1B
| $96K | ﹤0.01% |
+1,485
| New | +$96K |
|
865
Kayne Anderson Energy Infrastructure Fund
KYN
$2.06B
| $96K | ﹤0.01% |
+7,047
| New | +$96K |
|
|
BECN
866
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $96K | ﹤0.01% |
3,027
-45
| -1% | -$1.43K |
|
867
Ambev
ABEV
$35.7B
| $95K | ﹤0.01% |
24,445
+9,371
| +62% | +$36.4K |
|
868
ProShares Ultra Dow30
DDM
$452M
| $95K | ﹤0.01% |
2,531
+18
| +0.7% | +$676 |
|
|
HEES
869
DELISTED
H&E Equipment Services
HEES
| $95K | ﹤0.01% |
4,655
-1,493
| -24% | -$30.5K |
|
870
Open Text
OTEX
$8.96B
| $95K | ﹤0.01% |
+2,932
| New | +$95K |
|
871
CenterPoint Energy
CNP
$25B
| $94K | ﹤0.01% |
3,362
-20,344
| -86% | -$569K |
|
|
DQ
872
Daqo New Energy
DQ
$1.73B
| $94K | ﹤0.01% |
20,210
-9,615
| -32% | -$44.7K |
|
873
Masco
MAS
$15.7B
| $94K | ﹤0.01% |
3,217
-3,902
| -55% | -$114K |
|
874
Sunrun
RUN
$3.69B
| $94K | ﹤0.01% |
+8,637
| New | +$94K |
|
|
TVTY
875
DELISTED
Tivity Health, Inc. Common Stock
TVTY
| $94K | ﹤0.01% |
+3,809
| New | +$94K |
|