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 |
NVIDIA
NVDA
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Applied Digital
APLD
$3.63B
| $3.47M | ﹤0.01% |
344,461
+86,874
| +34% | +$875K |
|
152
Kraft Heinz
KHC
$32.2B
| $3.44M | ﹤0.01% |
+133,311
| New | +$3.44M |
|
153
SPDR S&P Homebuilders ETF
XHB
$2.01B
| $3.43M | ﹤0.01% |
+34,770
| New | +$3.43M |
|
154
JD.com
JD
$44.3B
| $3.39M | ﹤0.01% |
103,904
-137,294
| -57% | -$4.48M |
|
155
GitLab
GTLB
$7.53B
| $3.32M | ﹤0.01% |
73,695
+54,359
| +281% | +$2.45M |
|
156
Cidara Therapeutics
CDTX
$1.64B
| $3.31M | ﹤0.01% |
+68,030
| New | +$3.31M |
|
157
Comerica
CMA
$8.91B
| $3.28M | ﹤0.01% |
55,067
+31,835
| +137% | +$1.9M |
|
158
Valero Energy
VLO
$48.1B
| $3.26M | ﹤0.01% |
24,279
+23,133
| +2,019% | +$3.11M |
|
159
Credo Technology Group
CRDO
$24.2B
| $3.26M | ﹤0.01% |
35,215
+14,700
| +72% | +$1.36M |
|
160
Progress Software
PRGS
$1.9B
| $3.24M | ﹤0.01% |
+50,718
| New | +$3.24M |
|
161
Teva Pharmaceuticals
TEVA
$21.5B
| $3.23M | ﹤0.01% |
192,990
-223,773
| -54% | -$3.75M |
|
162
NuScale Power
SMR
$4.75B
| $3.18M | ﹤0.01% |
80,374
-175,874
| -69% | -$6.96M |
|
163
Campbell Soup
CPB
$10.1B
| $3.16M | ﹤0.01% |
103,255
+102,280
| +10,490% | +$3.13M |
|
164
GXO Logistics
GXO
$5.91B
| $3.16M | ﹤0.01% |
64,894
+2,626
| +4% | +$128K |
|
165
Fiserv
FI
$73.6B
| $3.14M | ﹤0.01% |
18,199
+526
| +3% | +$90.7K |
|
166
Zscaler
ZS
$42B
| $3.14M | ﹤0.01% |
9,988
-21,259
| -68% | -$6.67M |
|
167
SPDR Portfolio S&P 500 Growth ETF
SPYG
$40.7B
| $3.12M | ﹤0.01% |
+32,778
| New | +$3.12M |
|
168
NewMarket
NEU
$7.65B
| $3.1M | ﹤0.01% |
4,492
+4,480
| +37,333% | +$3.09M |
|
169
Pinterest
PINS
$25.5B
| $3.08M | ﹤0.01% |
+86,024
| New | +$3.08M |
|
170
abrdn Physical Platinum Shares ETF
PPLT
$1.59B
| $3.08M | ﹤0.01% |
+25,074
| New | +$3.08M |
|
171
Under Armour
UAA
$2.23B
| $3.05M | ﹤0.01% |
447,074
+3,427
| +0.8% | +$23.4K |
|
|
NBIS
172
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.4B
| $3.04M | ﹤0.01% |
+54,883
| New | +$3.04M |
|
173
Bristol-Myers Squibb
BMY
$95.3B
| $2.99M | ﹤0.01% |
64,693
-124,206
| -66% | -$5.75M |
|
174
Estee Lauder
EL
$32.3B
| $2.97M | ﹤0.01% |
36,802
+30,988
| +533% | +$2.5M |
|
175
CommScope
COMM
$3.59B
| $2.96M | ﹤0.01% |
357,132
+262,439
| +277% | +$2.17M |
|