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 | |
|---|---|---|---|---|---|---|
|
DISH
151
DELISTED
DISH Network Corp.
DISH
| $1.4M | ﹤0.01% |
+55,914
| New | +$1.4M |
|
152
Viatris
VTRS
$12.2B
| $1.39M | ﹤0.01% |
50,642
-805
| -2% | -$22K |
|
153
Axalta
AXTA
$6.89B
| $1.38M | ﹤0.01% |
58,745
+36,436
| +163% | +$853K |
|
154
HealthEquity
HQY
$7.88B
| $1.37M | ﹤0.01% |
22,890
+22,073
| +2,702% | +$1.32M |
|
155
Utilities Select Sector SPDR Fund
XLU
$20.7B
| $1.36M | ﹤0.01% |
25,727
+21,727
| +543% | +$1.15M |
|
156
Moody's
MCO
$89.5B
| $1.36M | ﹤0.01% |
9,710
-1,048
| -10% | -$147K |
|
|
BBBY
157
Bed Bath & Beyond, Inc.
BBBY
$567M
| $1.36M | ﹤0.01% |
121,021
+43,533
| +56% | +$488K |
|
158
Direxion Daily Gold Miners Index Bear 2X Shares
DUST
$62.9M
| $1.36M | ﹤0.01% |
237
-54
| -19% | -$309K |
|
159
iShares Core S&P Small-Cap ETF
IJR
$86B
| $1.35M | ﹤0.01% |
+19,511
| New | +$1.35M |
|
160
Materion
MTRN
$2.33B
| $1.35M | ﹤0.01% |
+30,053
| New | +$1.35M |
|
161
Vipshop
VIPS
$8.45B
| $1.35M | ﹤0.01% |
247,350
-274,455
| -53% | -$1.5M |
|
162
Check Point Software Technologies
CHKP
$20.7B
| $1.35M | ﹤0.01% |
+13,106
| New | +$1.35M |
|
163
Bank of New York Mellon
BK
$73.1B
| $1.34M | ﹤0.01% |
28,421
+27,250
| +2,327% | +$1.28M |
|
164
Nexstar Media Group
NXST
$6.31B
| $1.31M | ﹤0.01% |
16,596
-15,430
| -48% | -$1.21M |
|
165
Coherent
COHR
$15.2B
| $1.3M | ﹤0.01% |
+40,156
| New | +$1.3M |
|
166
Lear
LEA
$5.91B
| $1.3M | ﹤0.01% |
10,593
+5,675
| +115% | +$697K |
|
167
Gartner
IT
$18.6B
| $1.3M | ﹤0.01% |
+10,170
| New | +$1.3M |
|
|
RESI
168
DELISTED
Front Yard Residential Corporation Common Stock
RESI
| $1.3M | ﹤0.01% |
148,515
+34,437
| +30% | +$301K |
|
169
Liberty Global Class A
LBTYA
$4.05B
| $1.29M | ﹤0.01% |
60,344
+51,886
| +613% | +$1.11M |
|
170
Aramark
ARMK
$10.2B
| $1.29M | ﹤0.01% |
61,504
+41,428
| +206% | +$866K |
|
|
LM
171
DELISTED
Legg Mason, Inc.
LM
| $1.28M | ﹤0.01% |
50,219
+49,889
| +15,118% | +$1.27M |
|
172
Synovus
SNV
$7.15B
| $1.28M | ﹤0.01% |
39,986
+34,544
| +635% | +$1.1M |
|
173
Marathon Petroleum
MPC
$54.8B
| $1.27M | ﹤0.01% |
21,562
-145,242
| -87% | -$8.57M |
|
174
Ambarella
AMBA
$3.54B
| $1.27M | ﹤0.01% |
36,266
+11,666
| +47% | +$408K |
|
175
ProShares UltraShort Bloomberg Crude Oil
SCO
$125M
| $1.27M | ﹤0.01% |
2,164
+512
| +31% | +$300K |
|