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 | |
|---|---|---|---|---|---|---|
4226
CALL
Universal Corp
UVV
$1.35B
| $114K | ﹤0.01% |
26
+21
| +420% | +$1.05K |
|
|
CUB
4227
DELISTED
Cubic Corporation
CUB
| $114K | ﹤0.01% |
2,760
-1,782
| -39% | -$103K |
|
|
TTM.RT
4228
CALL
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $114K | ﹤0.01% |
243
-413
| -63% | -$194K |
|
4229
PUT
Old National Bancorp
ONB
$10.3B
| $113K | ﹤0.01% |
86
+85
| +8,500% | +$1.42K |
|
4230
Progyny
PGNY
$2.42B
| $113K | ﹤0.01% |
5,344
+4,444
| +494% | +$122K |
|
4231
PUT
Radian Group
RDN
$5.25B
| $113K | ﹤0.01% |
88
+86
| +4,300% | +$1.88K |
|
4232
CALL
RLJ Lodging Trust
RLJ
$1.89B
| $113K | ﹤0.01% |
147
+133
| +950% | +$1.79K |
|
4233
Sunrun
RUN
$2.3B
| $113K | ﹤0.01% |
11,286
-4,860
| -30% | -$79.8K |
|
|
SEE
4234
CALL
DELISTED
Sealed Air
SEE
| $113K | ﹤0.01% |
46
-107
| -70% | -$3.49K |
|
4235
Alaunos Therapeutics
TCRT
$4.64M
| $113K | ﹤0.01% |
309
+45
| +17% | +$23.3K |
|
4236
CALL
VICI Properties
VICI
$29.8B
| $113K | ﹤0.01% |
68
+51
| +300% | +$1.19K |
|
4237
PUT
Verra Mobility
VRRM
$811M
| $113K | ﹤0.01% |
159
-16
| -9% | -$213 |
|
|
SPWR
4238
DELISTED
SunPower Corporation Common Stock
SPWR
| $113K | ﹤0.01% |
34,269
+9,455
| +38% | +$49.8K |
|
4239
CALL
Alarm.com
ALRM
$2.72B
| $112K | ﹤0.01% |
29
+20
| +222% | +$872 |
|
4240
Azenta
AZTA
$1.32B
| $112K | ﹤0.01% |
3,689
+2,699
| +273% | +$98.2K |
|
4241
PUT
Box
BOX
$4.4B
| $112K | ﹤0.01% |
80
-613
| -88% | -$9.12K |
|
4242
PUT
Brown & Brown
BRO
$24.5B
| $112K | ﹤0.01% |
+31
| New | +$1.31K |
|
4243
PUT
Compass Diversified
CODI
$773M
| $112K | ﹤0.01% |
84
+23
| +38% | +$468 |
|
4244
CALL
e.l.f. Beauty
ELF
$4.91B
| $112K | ﹤0.01% |
114
-123
| -52% | -$1.85K |
|
|
JMIA
4245
CALL
Jumia Technologies
JMIA
$733M
| $112K | ﹤0.01% |
385
-47
| -11% | -$236 |
|
4246
CALL
MBIA
MBI
$276M
| $112K | ﹤0.01% |
157
-169
| -52% | -$1.43K |
|
4247
PUT
Marten Transport
MRTN
$1.23B
| $112K | ﹤0.01% |
+83
| New | +$1.14K |
|
4248
CALL
Mueller Water Products
MWA
$4.01B
| $112K | ﹤0.01% |
140
+42
| +43% | +$462 |
|
4249
Outfront Media
OUT
$5.76B
| $112K | ﹤0.01% |
8,467
+3,195
| +61% | +$78.1K |
|
4250
CALL
Plains GP Holdings
PAGP
$5.26B
| $112K | ﹤0.01% |
200
-86
| -30% | -$1.21K |
|
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.