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 | |
|---|---|---|---|---|---|---|
|
SAGE
2251
PUT
DELISTED
Sage Therapeutics
SAGE
| $695K | ﹤0.01% |
242
+78
| +48% | +$4.52K |
|
2252
PUT
Newell Brands
NWL
$2.16B
| $694K | ﹤0.01% |
523
-724
| -58% | -$12.5K |
|
2253
PUT
Steel Dynamics
STLD
$35.6B
| $694K | ﹤0.01% |
308
+177
| +135% | +$4.85K |
|
2254
PUT
MakeMyTrip
MMYT
$4.67B
| $692K | ﹤0.01% |
579
+512
| +764% | +$11.1K |
|
|
RETA
2255
CALL
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $692K | ﹤0.01% |
48
-55
| -53% | -$10.6K |
|
2256
PUT
Huntsman Corp
HUN
$2.24B
| $691K | ﹤0.01% |
479
-555
| -54% | -$10.8K |
|
|
BRSL
2257
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $690K | ﹤0.01% |
1,160
-288
| -20% | -$3.28K |
|
2258
CALL
Ingles Markets
IMKTA
$1.63B
| $690K | ﹤0.01% |
191
+188
| +6,267% | +$7.44K |
|
|
PVG
2259
DELISTED
PRETIUM RESOURCES INC.
PVG
| $690K | ﹤0.01% |
+121,817
| New | +$1.04M |
|
|
CBPO
2260
PUT
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $690K | ﹤0.01% |
64
+16
| +33% | +$1.84K |
|
2261
PUT
USA Compression Partners
USAC
$3.82B
| $689K | ﹤0.01% |
1,219
+889
| +269% | +$11.8K |
|
|
CXO
2262
PUT
DELISTED
CONCHO RESOURCES INC.
CXO
| $689K | ﹤0.01% |
+161
| New | +$11.2K |
|
2263
CALL
Levi Strauss
LEVI
$9.44B
| $688K | ﹤0.01% |
554
+269
| +94% | +$4.75K |
|
2264
CALL
Pool Corp
POOL
$6.7B
| $688K | ﹤0.01% |
35
-110
| -76% | -$23.4K |
|
2265
PUT
Open Text
OTEX
$5.43B
| $687K | ﹤0.01% |
197
+150
| +319% | +$6.36K |
|
2266
CALL
SiriusXM
SIRI
$10B
| $685K | ﹤0.01% |
+139
| New | +$9.09K |
|
2267
Ares Capital
ARCC
$13.5B
| $684K | ﹤0.01% |
63,467
+61,975
| +4,154% | +$1.05M |
|
2268
CALL
Liberty Media Series A
FWONA
$22.3B
| $684K | ﹤0.01% |
232
+23
| +11% | +$829 |
|
2269
PUT
VeriSign
VRSN
$25.3B
| $684K | ﹤0.01% |
38
-146
| -79% | -$28.7K |
|
2270
PUT
Dycom Industries
DY
$12.9B
| $682K | ﹤0.01% |
266
+85
| +47% | +$3K |
|
2271
Nutanix
NTNX
$14.9B
| $682K | ﹤0.01% |
43,227
-44,794
| -51% | -$1.26M |
|
2272
PUT
OSI Systems
OSIS
$3.57B
| $682K | ﹤0.01% |
99
-125
| -56% | -$10.7K |
|
2273
PUT
3D Systems Corp
DDD
$420M
| $680K | ﹤0.01% |
882
+529
| +150% | +$5.16K |
|
2274
PUT
Omeros
OMER
$709M
| $680K | ﹤0.01% |
509
+66
| +15% | +$878 |
|
2275
PUT
Huntington Bancshares
HBAN
$35.1B
| $679K | ﹤0.01% |
828
+730
| +745% | +$8.98K |
|
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.