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 |
Boeing
BA
|
$49.5M |
| 2 |
Pinduoduo
PDD
|
$45.3M |
| 3 |
Microsoft
MSFT
|
$42.5M |
| 4 |
Apple
AAPL
|
$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
$95.4M |
| 2 |
Citigroup
C
|
$57.9M |
| 3 |
Pfizer
PFE
|
$55.9M |
| 4 |
TSMC
TSM
|
$40.4M |
| 5 |
Starbucks
SBUX
|
$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Chewy
CHWY
$16.8B
| $4.25M | ﹤0.01% |
145,224
+71,834
| +98% | +$2.1M |
|
152
Vale
VALE
$43.6B
| $4.13M | ﹤0.01% |
353,406
-375,143
| -51% | -$4.38M |
|
153
American Eagle Outfitters
AEO
$2.36B
| $4.11M | ﹤0.01% |
183,590
-40,131
| -18% | -$898K |
|
154
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $4.11M | ﹤0.01% |
49,523
+24,814
| +100% | +$2.06M |
|
155
Victoria's Secret
VSCO
$1.83B
| $4.1M | ﹤0.01% |
159,590
+138,607
| +661% | +$3.56M |
|
156
Boston Properties
BXP
$11.7B
| $4.09M | ﹤0.01% |
50,795
+40,700
| +403% | +$3.27M |
|
157
Philips
PHG
$25.8B
| $4.04M | ﹤0.01% |
128,743
+95,585
| +288% | +$3M |
|
158
Peloton Interactive
PTON
$3.1B
| $4.04M | ﹤0.01% |
862,658
-76,863
| -8% | -$360K |
|
|
FLG
159
Flagstar Financial, Inc.
FLG
$5.33B
| $4.03M | ﹤0.01% |
359,055
-93,363
| -21% | -$1.05M |
|
160
ProShares Bitcoin Strategy ETF
BITO
$2.65B
| $4.01M | ﹤0.01% |
208,816
-89,982
| -30% | -$1.73M |
|
161
American Electric Power
AEP
$58.8B
| $4M | ﹤0.01% |
38,993
+35,095
| +900% | +$3.6M |
|
162
Constellation Brands
STZ
$25.8B
| $3.99M | ﹤0.01% |
15,482
-8,125
| -34% | -$2.09M |
|
163
Seagate
STX
$37.5B
| $3.97M | ﹤0.01% |
36,264
-48,632
| -57% | -$5.33M |
|
164
Regeneron Pharmaceuticals
REGN
$59.8B
| $3.94M | ﹤0.01% |
3,749
-1,288
| -26% | -$1.35M |
|
165
Zillow
Z
$20.2B
| $3.94M | ﹤0.01% |
61,677
-20,397
| -25% | -$1.3M |
|
166
Ciena
CIEN
$13.4B
| $3.89M | ﹤0.01% |
63,157
+9,522
| +18% | +$586K |
|
167
Schlumberger
SLB
$52.2B
| $3.88M | ﹤0.01% |
92,473
-6,034
| -6% | -$253K |
|
168
Li Auto
LI
$24.4B
| $3.88M | ﹤0.01% |
151,074
-39,831
| -21% | -$1.02M |
|
169
Viking Therapeutics
VKTX
$3.02B
| $3.86M | ﹤0.01% |
60,981
-20,326
| -25% | -$1.29M |
|
170
Petrobras
PBR
$79.3B
| $3.84M | ﹤0.01% |
266,803
-89,327
| -25% | -$1.29M |
|
171
Norwegian Cruise Line
NCLH
$11.5B
| $3.82M | ﹤0.01% |
186,120
+6,932
| +4% | +$142K |
|
172
Real Estate Select Sector SPDR Fund
XLRE
$7.53B
| $3.8M | ﹤0.01% |
85,096
+55,606
| +189% | +$2.48M |
|
173
Foot Locker
FL
$2.31B
| $3.79M | ﹤0.01% |
146,694
-74,308
| -34% | -$1.92M |
|
174
XPeng
XPEV
$19.3B
| $3.75M | ﹤0.01% |
307,981
+18,043
| +6% | +$220K |
|
175
Elanco Animal Health
ELAN
$8.62B
| $3.75M | ﹤0.01% |
+255,342
| New | +$3.75M |
|