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 | |
|---|---|---|---|---|---|---|
|
DNKN
1826
PUT
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $1.06M | ﹤0.01% |
200
+60
| +43% | +$4.16K |
|
1827
iPath Series B S&P 500 VIX Mid-Term Futures ETN
VXZ
$31.5M
| $1.06M | ﹤0.01% |
+8,300
| New | +$712K |
|
1828
CALL
Harley-Davidson
HOG
$2.68B
| $1.06M | ﹤0.01% |
560
-90
| -14% | -$2.72K |
|
1829
PUT
Under Armour Class C
UA
$2.92B
| $1.06M | ﹤0.01% |
1,233
+326
| +36% | +$4.68K |
|
1830
CALL
Fiverr
FVRR
$376M
| $1.06M | ﹤0.01% |
+421
| New | +$11.3K |
|
1831
CALL
Synaptics
SYNA
$4.41B
| $1.06M | ﹤0.01% |
183
-15
| -8% | -$1.02K |
|
1832
CALL
Diamondback Energy
FANG
$57.6B
| $1.06M | ﹤0.01% |
404
-118
| -23% | -$7.43K |
|
1833
CALL
Air Products & Chemicals
APD
$66.3B
| $1.06M | ﹤0.01% |
53
-153
| -74% | -$34.9K |
|
1834
PUT
Liberty Media Series A
FWONA
$22.3B
| $1.05M | ﹤0.01% |
371
+260
| +234% | +$9.37K |
|
1835
PUT
Sunrun
RUN
$2.37B
| $1.05M | ﹤0.01% |
1,042
+731
| +235% | +$12K |
|
1836
PUT
Minerva Neurosciences
NERV
$188M
| $1.05M | ﹤0.01% |
218
+204
| +1,457% | +$12.3K |
|
1837
SS&C Technologies
SSNC
$17.8B
| $1.05M | ﹤0.01% |
+23,926
| New | +$1.35M |
|
1838
CALL
Citizens Financial Group
CFG
$30.4B
| $1.05M | ﹤0.01% |
557
+245
| +79% | +$7.99K |
|
|
FL
1839
CALL
DELISTED
Foot Locker
FL
| $1.04M | ﹤0.01% |
474
-162
| -25% | -$5.51K |
|
1840
Cummins
CMI
$91.7B
| $1.04M | ﹤0.01% |
+7,716
| New | +$1.2M |
|
1841
Dell
DELL
$283B
| $1.04M | ﹤0.01% |
52,079
-28,765
| -36% | -$664K |
|
1842
CALL
Globe Life
GL
$13.5B
| $1.04M | ﹤0.01% |
145
+139
| +2,317% | +$13.1K |
|
1843
CALL
APA Corp
APA
$12.8B
| $1.04M | ﹤0.01% |
2,493
-941
| -27% | -$21K |
|
1844
CALL
Golar LNG
GLNG
$4.95B
| $1.04M | ﹤0.01% |
1,320
+1,103
| +508% | +$12.1K |
|
|
GAP
1845
PUT
The Gap Inc
GAP
$6.84B
| $1.04M | ﹤0.01% |
1,478
-736
| -33% | -$10.9K |
|
|
LKFT
1846
PUT
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.82B
| $1.04M | ﹤0.01% |
53
-149
| -74% | -$32.1K |
|
1847
PUT
Lumentum
LITE
$59.4B
| $1.04M | ﹤0.01% |
+141
| New | +$11.1K |
|
1848
CALL
Viking Therapeutics
VKTX
$4.04B
| $1.04M | ﹤0.01% |
2,220
+910
| +69% | +$5.59K |
|
1849
CALL
Crane NXT
CXT
$3.04B
| $1.04M | ﹤0.01% |
607
-208
| -26% | -$5.34K |
|
1850
PUT
Genuine Parts
GPC
$17.1B
| $1.04M | ﹤0.01% |
154
+24
| +18% | +$2.14K |
|
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.