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 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
726
CVR Partners
UAN
$909M
| $156K | 0.01% |
4,853
+4,178
| +619% | +$134K |
|
|
LGF.B
727
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $156K | 0.01% |
4,930
-1,494
| -23% | -$47.3K |
|
728
Ashland
ASH
$2.42B
| $155K | 0.01% |
2,373
-14,207
| -86% | -$928K |
|
729
DHT Holdings
DHT
$1.96B
| $155K | 0.01% |
39,032
-10,919
| -22% | -$43.4K |
|
730
Corning
GLW
$63.9B
| $153K | 0.01% |
+5,122
| New | +$153K |
|
731
Belden
BDC
$5.15B
| $152K | 0.01% |
1,888
+1,750
| +1,268% | +$141K |
|
732
Fluor
FLR
$6.74B
| $152K | 0.01% |
3,624
-14,422
| -80% | -$605K |
|
733
Monarch Casino & Resort
MCRI
$1.85B
| $152K | 0.01% |
+3,869
| New | +$152K |
|
734
Open Text
OTEX
$8.85B
| $152K | 0.01% |
4,735
-7,685
| -62% | -$247K |
|
|
HT
735
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
| $152K | 0.01% |
8,142
+6,697
| +463% | +$125K |
|
|
HABT
736
DELISTED
The Habit Restaurants, Inc. - Class A
HABT
| $152K | 0.01% |
11,674
+2,831
| +32% | +$36.9K |
|
737
MakeMyTrip
MMYT
$9.26B
| $150K | 0.01% |
5,243
+2,031
| +63% | +$58.1K |
|
738
Scorpio Tankers
STNG
$2.9B
| $150K | 0.01% |
4,402
-197
| -4% | -$6.71K |
|
739
ProShares Ultra Gold
UGL
$748M
| $150K | 0.01% |
15,248
+14,032
| +1,154% | +$138K |
|
740
Cintas
CTAS
$81.7B
| $149K | 0.01% |
4,148
+3,400
| +455% | +$122K |
|
741
Box
BOX
$4.79B
| $148K | 0.01% |
7,691
+2,581
| +51% | +$49.7K |
|
742
Cohu
COHU
$964M
| $147K | 0.01% |
6,188
-2,771
| -31% | -$65.8K |
|
743
Restaurant Brands International
QSR
$20.4B
| $147K | 0.01% |
2,315
-21,211
| -90% | -$1.35M |
|
|
SOHU
744
Sohu.com
SOHU
$477M
| $147K | 0.01% |
2,716
-8,579
| -76% | -$464K |
|
|
SGG
745
DELISTED
iPath Bloomberg Sugar Subindex Total Return ETN due June 24, 2038
SGG
| $147K | 0.01% |
5,158
-11,744
| -69% | -$335K |
|
|
BLCM
746
DELISTED
Bellicum Pharmaceuticals, Inc.
BLCM
| $145K | 0.01% |
1,258
+838
| +200% | +$96.6K |
|
|
STMP
747
DELISTED
Stamps.com, Inc.
STMP
| $145K | 0.01% |
+718
| New | +$145K |
|
748
MaxLinear
MXL
$1.41B
| $143K | 0.01% |
6,022
+5,488
| +1,028% | +$130K |
|
749
AeroVironment
AVAV
$11.6B
| $142K | 0.01% |
+2,627
| New | +$142K |
|
750
Insulet
PODD
$23.6B
| $142K | 0.01% |
2,593
+1,789
| +223% | +$98K |
|