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
|
$60M |
| 2 |
Microsoft
MSFT
|
$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$52.5M |
| 4 |
PayPal
PYPL
|
$40.9M |
| 5 |
Netflix
NFLX
|
$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
$48.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
Adobe
ADBE
|
$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 5 |
Enphase Energy
ENPH
|
$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
201
AstraZeneca
AZN
$253B
| $2.38M | ﹤0.01% |
+33,308
| New | +$2.38M |
|
202
Domino's
DPZ
$15.7B
| $2.38M | ﹤0.01% |
+7,068
| New | +$2.38M |
|
203
Frontier Communications
FYBR
$9.33B
| $2.35M | ﹤0.01% |
+126,157
| New | +$2.35M |
|
204
BJs Wholesale Club
BJ
$12.8B
| $2.28M | ﹤0.01% |
36,218
+7,966
| +28% | +$502K |
|
205
Vodafone
VOD
$28.5B
| $2.27M | ﹤0.01% |
240,408
-247,802
| -51% | -$2.34M |
|
206
PennyMac Financial
PFSI
$6.08B
| $2.27M | ﹤0.01% |
32,281
+27,957
| +647% | +$1.97M |
|
207
Pacific Biosciences
PACB
$381M
| $2.27M | ﹤0.01% |
+170,443
| New | +$2.27M |
|
208
SolarEdge
SEDG
$2.04B
| $2.25M | ﹤0.01% |
+8,381
| New | +$2.25M |
|
209
Trane Technologies
TT
$92.1B
| $2.25M | ﹤0.01% |
+11,785
| New | +$2.25M |
|
210
Aehr Test Systems
AEHR
$765M
| $2.24M | ﹤0.01% |
54,413
+51,099
| +1,542% | +$2.11M |
|
211
Dominion Energy
D
$49.7B
| $2.24M | ﹤0.01% |
43,268
-31,047
| -42% | -$1.61M |
|
212
Samsara
IOT
$24B
| $2.24M | ﹤0.01% |
80,749
+9,743
| +14% | +$270K |
|
213
Elanco Animal Health
ELAN
$9.16B
| $2.24M | ﹤0.01% |
222,248
+101,998
| +85% | +$1.03M |
|
214
Unum
UNM
$12.6B
| $2.22M | ﹤0.01% |
46,643
+16,545
| +55% | +$789K |
|
215
Constellation Energy
CEG
$94.2B
| $2.21M | ﹤0.01% |
24,154
-8,613
| -26% | -$788K |
|
216
United States Oil Fund
USO
$939M
| $2.2M | ﹤0.01% |
34,543
-22,124
| -39% | -$1.41M |
|
|
SWAV
217
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $2.14M | ﹤0.01% |
+7,493
| New | +$2.14M |
|
218
nVent Electric
NVT
$14.9B
| $2.11M | ﹤0.01% |
+40,888
| New | +$2.11M |
|
219
Keurig Dr Pepper
KDP
$38.9B
| $2.08M | ﹤0.01% |
66,649
+48,095
| +259% | +$1.5M |
|
220
Apollo Global Management
APO
$75.3B
| $2.07M | ﹤0.01% |
26,887
-132,817
| -83% | -$10.2M |
|
221
Medtronic
MDT
$119B
| $2.05M | ﹤0.01% |
23,255
-40,523
| -64% | -$3.57M |
|
222
Weibo
WB
$2.87B
| $2.05M | ﹤0.01% |
156,195
+37,312
| +31% | +$489K |
|
223
Impinj
PI
$5.56B
| $2M | ﹤0.01% |
+22,321
| New | +$2M |
|
224
Nexstar Media Group
NXST
$6.31B
| $2M | ﹤0.01% |
+12,000
| New | +$2M |
|
225
Best Buy
BBY
$16.1B
| $1.99M | ﹤0.01% |
24,225
-20,091
| -45% | -$1.65M |
|