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
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
BZUN
2151
Baozun
BZUN
$144M
| $759K | ﹤0.01% |
27,193
+25,306
| +1,341% | +$797K |
|
2152
Celanese
CE
$5.09B
| $759K | ﹤0.01% |
10,349
+4,985
| +93% | +$493K |
|
2153
JetBlue
JBLU
$1.96B
| $759K | ﹤0.01% |
84,846
+59,962
| +241% | +$994K |
|
|
TCO
2154
CALL
DELISTED
Taubman Centers Inc.
TCO
| $758K | ﹤0.01% |
181
+169
| +1,408% | +$7.04K |
|
2155
PUT
GoPro
GPRO
$116M
| $756K | ﹤0.01% |
2,889
+2,108
| +270% | +$7.83K |
|
2156
CALL
BCE
BCE
$19.9B
| $755K | ﹤0.01% |
185
-77
| -29% | -$3.45K |
|
|
FIEU
2157
CALL
DELISTED
FI Enhanced Europe 50 ETN
FIEU
| $755K | ﹤0.01% |
77
+30
| +64% | +$294K |
|
2158
Aecom
ACM
$9.07B
| $754K | ﹤0.01% |
+25,264
| New | +$1.08M |
|
2159
PUT
Invesco CurrencyShares Australian Dollar Trust
FXA
$96.8M
| $754K | ﹤0.01% |
123
+121
| +6,050% | +$7.95K |
|
|
FLG
2160
CALL
Flagstar Bank National Association
FLG
$5.77B
| $754K | ﹤0.01% |
268
+138
| +106% | +$4.59K |
|
2161
PUT
Bread Financial
BFH
$4.21B
| $753K | ﹤0.01% |
281
-517
| -65% | -$35.2K |
|
|
PRFT
2162
PUT
DELISTED
Perficient Inc
PRFT
| $753K | ﹤0.01% |
278
+24
| +9% | +$1.05K |
|
|
BZUN
2163
CALL
Baozun
BZUN
$144M
| $751K | ﹤0.01% |
269
-173
| -39% | -$5.45K |
|
2164
PUT
Cognex
CGNX
$10.3B
| $751K | ﹤0.01% |
178
-266
| -60% | -$13.3K |
|
2165
CALL
Varonis Systems
VRNS
$5.25B
| $751K | ﹤0.01% |
354
+189
| +115% | +$4.95K |
|
2166
CALL
Devon Energy
DVN
$51.9B
| $750K | ﹤0.01% |
1,086
-1,279
| -54% | -$23.1K |
|
|
ATSG
2167
CALL
DELISTED
Air Transport Services Group
ATSG
| $749K | ﹤0.01% |
410
+380
| +1,267% | +$7.62K |
|
2168
PUT
Zimmer Biomet
ZBH
$17.7B
| $747K | ﹤0.01% |
76
-76
| -50% | -$9.96K |
|
|
CCXI
2169
CALL
DELISTED
ChemoCentryx, Inc.
CCXI
| $747K | ﹤0.01% |
186
-593
| -76% | -$25.2K |
|
2170
State Street SPDR EURO STOXX 50 ETF
FEZ
$4.28B
| $745K | ﹤0.01% |
+25,264
| New | +$924K |
|
2171
CALL
Tenet Healthcare
THC
$20.1B
| $745K | ﹤0.01% |
518
+144
| +39% | +$4.13K |
|
2172
Iovance Biotherapeutics
IOVA
$2.23B
| $744K | ﹤0.01% |
24,875
+809
| +3% | +$21.4K |
|
2173
CALL
Sonos
SONO
$1.75B
| $744K | ﹤0.01% |
878
+393
| +81% | +$4.85K |
|
|
LVGO
2174
PUT
DELISTED
Livongo Health, Inc. Common Stock
LVGO
| $744K | ﹤0.01% |
261
+176
| +207% | +$4.56K |
|
2175
CALL
Steel Dynamics
STLD
$35.6B
| $743K | ﹤0.01% |
330
+9
| +3% | +$246 |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.