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 | |
|---|---|---|---|---|---|---|
701
AMC Entertainment Holdings
AMC
$1.45B
| $175K | ﹤0.01% |
1,179
-3,969
| -77% | -$589K |
|
702
SiriusPoint
SPNT
$2.21B
| $175K | ﹤0.01% |
16,860
+16,299
| +2,905% | +$169K |
|
703
iShares Mortgage Real Estate ETF
REM
$616M
| $174K | ﹤0.01% |
4,017
+793
| +25% | +$34.4K |
|
704
Telecom Argentina
TEO
$3.08B
| $174K | ﹤0.01% |
11,951
+904
| +8% | +$13.2K |
|
705
Natural Resource Partners
NRP
$1.33B
| $173K | ﹤0.01% |
+4,133
| New | +$173K |
|
706
Medical Properties Trust
MPW
$2.75B
| $172K | ﹤0.01% |
9,335
+7,663
| +458% | +$141K |
|
|
RCM
707
DELISTED
R1 RCM Inc. Common Stock
RCM
| $172K | ﹤0.01% |
+17,876
| New | +$172K |
|
|
HZNP
708
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $172K | ﹤0.01% |
6,541
+1,121
| +21% | +$29.5K |
|
709
iShares MSCI USA Min Vol Factor ETF
USMV
$23.4B
| $171K | ﹤0.01% |
2,911
+2,521
| +646% | +$148K |
|
710
Real Estate Select Sector SPDR Fund
XLRE
$7.61B
| $171K | ﹤0.01% |
4,729
+1,841
| +64% | +$66.6K |
|
711
Axalta
AXTA
$7.01B
| $168K | ﹤0.01% |
6,668
-52,077
| -89% | -$1.31M |
|
|
SINA
712
DELISTED
Sina Corp
SINA
| $168K | ﹤0.01% |
2,844
+2,633
| +1,248% | +$156K |
|
713
Core Laboratories
CLB
$582M
| $166K | ﹤0.01% |
2,422
-435
| -15% | -$29.8K |
|
714
Fiserv
FI
$73.5B
| $166K | ﹤0.01% |
1,882
-1,783
| -49% | -$157K |
|
|
CEQP
715
DELISTED
Crestwood Equity Partners LP
CEQP
| $164K | ﹤0.01% |
+4,664
| New | +$164K |
|
716
Coeur Mining
CDE
$9.36B
| $163K | ﹤0.01% |
40,102
-11,323
| -22% | -$46K |
|
717
SPDR S&P Oil & Gas Equipment & Services ETF
XES
$154M
| $163K | ﹤0.01% |
1,419
-5,039
| -78% | -$579K |
|
718
Arrowhead Research
ARWR
$3.76B
| $162K | ﹤0.01% |
8,876
-2,355
| -21% | -$43K |
|
719
Coca-Cola Femsa
KOF
$17.8B
| $162K | ﹤0.01% |
+2,462
| New | +$162K |
|
720
W.R. Berkley
WRB
$27.5B
| $162K | ﹤0.01% |
+6,487
| New | +$162K |
|
721
Adient
ADNT
$1.99B
| $161K | ﹤0.01% |
+12,491
| New | +$161K |
|
722
ON Semiconductor
ON
$20B
| $161K | ﹤0.01% |
7,855
-13,783
| -64% | -$283K |
|
723
Qorvo
QRVO
$8.5B
| $160K | ﹤0.01% |
+2,231
| New | +$160K |
|
724
XPO
XPO
$15.6B
| $159K | ﹤0.01% |
8,564
+7,118
| +492% | +$132K |
|
|
PBFX
725
DELISTED
PBF LOGISTICS LP
PBFX
| $159K | ﹤0.01% |
+7,565
| New | +$159K |
|