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 | |
|---|---|---|---|---|---|---|
1176
Brilliant Earth
BRLT
$37.2M
| $69K | ﹤0.01% |
17,892
+1,003
| +6% | +$3.87K |
|
1177
Kulicke & Soffa
KLIC
$2.01B
| $69K | ﹤0.01% |
1,171
+605
| +107% | +$35.6K |
|
1178
SI-BONE Inc
SIBN
$677M
| $69K | ﹤0.01% |
2,579
+740
| +40% | +$19.8K |
|
1179
CVR Partners
UAN
$930M
| $69K | ﹤0.01% |
867
-10,157
| -92% | -$808K |
|
|
NSTG
1180
DELISTED
NanoString Technologies, Inc.
NSTG
| $69K | ﹤0.01% |
17,092
+13,335
| +355% | +$53.8K |
|
1181
C.H. Robinson
CHRW
$15.6B
| $68K | ﹤0.01% |
+730
| New | +$68K |
|
1182
Fox Class B
FOX
$23.5B
| $68K | ﹤0.01% |
+2,148
| New | +$68K |
|
1183
The Honest Company
HNST
$447M
| $68K | ﹤0.01% |
40,714
+1,385
| +4% | +$2.31K |
|
1184
Adaptive Biotechnologies
ADPT
$1.92B
| $67K | ﹤0.01% |
10,075
+6,597
| +190% | +$43.9K |
|
1185
Ardagh Metal Packaging
AMBP
$2.13B
| $67K | ﹤0.01% |
18,019
-19,331
| -52% | -$71.9K |
|
1186
National Grid
NGG
$71B
| $67K | ﹤0.01% |
+1,045
| New | +$67K |
|
1187
Interface
TILE
$1.66B
| $67K | ﹤0.01% |
7,672
-2,915
| -28% | -$25.5K |
|
1188
Vertex
VERX
$3.84B
| $67K | ﹤0.01% |
3,440
-11,642
| -77% | -$227K |
|
1189
Arbutus Biopharma
ABUS
$855M
| $66K | ﹤0.01% |
28,893
+23,963
| +486% | +$54.7K |
|
1190
ProShares Bitcoin Strategy ETF
BITO
$2.86B
| $66K | ﹤0.01% |
3,939
-273,775
| -99% | -$4.59M |
|
1191
Lazydays
GORV
$9.32M
| $66K | ﹤0.01% |
191
+18
| +10% | +$6.22K |
|
1192
Kilroy Realty
KRC
$5.11B
| $66K | ﹤0.01% |
+2,197
| New | +$66K |
|
1193
PMV Pharmaceuticals
PMVP
$65.2M
| $66K | ﹤0.01% |
+10,692
| New | +$66K |
|
|
QIPT
1194
Quipt Home Medical
QIPT
$117M
| $66K | ﹤0.01% |
12,418
+11,083
| +830% | +$58.9K |
|
1195
Sangamo Therapeutics
SGMO
$152M
| $66K | ﹤0.01% |
51,430
+24,128
| +88% | +$31K |
|
1196
Arcos Dorados Holdings
ARCO
$1.43B
| $65K | ﹤0.01% |
6,429
-15,603
| -71% | -$158K |
|
1197
Benchmark Electronics
BHE
$1.41B
| $65K | ﹤0.01% |
+2,527
| New | +$65K |
|
|
LGO
1198
Largo
LGO
$104M
| $65K | ﹤0.01% |
15,236
+14,914
| +4,632% | +$63.6K |
|
1199
Sally Beauty Holdings
SBH
$1.48B
| $65K | ﹤0.01% |
5,282
-814
| -13% | -$10K |
|
|
TVRD
1200
Tvardi Therapeutics, Inc. Common Stock
TVRD
$318M
| $65K | ﹤0.01% |
644
+567
| +736% | +$57.2K |
|