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 | |
|---|---|---|---|---|---|---|
1226
PUT
CarMax
KMX
$8.29B
| $2.17M | ﹤0.01% |
404
-396
| -50% | -$33.5K |
|
1227
CALL
Deckers Outdoor
DECK
$13.4B
| $2.17M | ﹤0.01% |
972
+786
| +423% | +$21.9K |
|
1228
PUT
Elanco Animal Health
ELAN
$12.4B
| $2.17M | ﹤0.01% |
+969
| New | +$26.5K |
|
|
PPLI
1229
CALL
People Inc
PPLI
$3.14B
| $2.15M | ﹤0.01% |
671
+128
| +24% | +$5.07K |
|
|
WCN
1230
PUT
Waste Connections
WCN
$42.7B
| $2.14M | ﹤0.01% |
276
+233
| +542% | +$21.9K |
|
|
CDK
1231
CALL
DELISTED
CDK Global, Inc.
CDK
| $2.14M | ﹤0.01% |
651
+483
| +288% | +$23.1K |
|
1232
Cisco
CSCO
$444B
| $2.13M | ﹤0.01% |
+54,254
| New | +$2.38M |
|
1233
PUT
Invesco Aerospace & Defense ETF
PPA
$8.22B
| $2.13M | ﹤0.01% |
1,043
+903
| +645% | +$58.6K |
|
1234
CALL
Baxter International
BAX
$11.2B
| $2.13M | ﹤0.01% |
262
-269
| -51% | -$23.2K |
|
1235
CALL
Adient
ADNT
$1.58B
| $2.13M | ﹤0.01% |
2,345
+589
| +34% | +$11.9K |
|
1236
CALL
Brown & Brown
BRO
$22.3B
| $2.13M | ﹤0.01% |
+587
| New | +$24.8K |
|
1237
PUT
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $2.13M | ﹤0.01% |
481
+338
| +236% | +$12.4K |
|
1238
PUT
Innovative Industrial Properties
IIPR
$1.78B
| $2.13M | ﹤0.01% |
280
-358
| -56% | -$30.2K |
|
1239
CALL
Jack Henry & Associates
JKHY
$10.5B
| $2.13M | ﹤0.01% |
137
+117
| +585% | +$18.2K |
|
1240
CALL
Ubiquiti
UI
$32B
| $2.12M | ﹤0.01% |
150
+27
| +22% | +$4.12K |
|
1241
CALL
Nokia
NOK
$54.3B
| $2.12M | ﹤0.01% |
6,838
+2,340
| +52% | +$8.7K |
|
1242
PUT
Bath & Body Works
BBWI
$3.9B
| $2.12M | ﹤0.01% |
2,264
+62
| +3% | +$984 |
|
1243
PUT
Eaton
ETN
$161B
| $2.11M | ﹤0.01% |
272
-185
| -40% | -$17K |
|
1244
CALL
Tractor Supply
TSCO
$15.9B
| $2.11M | ﹤0.01% |
1,250
-1,200
| -49% | -$21.5K |
|
1245
PUT
Itaú Unibanco
ITUB
$92B
| $2.1M | ﹤0.01% |
6,425
+2,934
| +84% | +$15K |
|
1246
PUT
Sprouts Farmers Market
SFM
$6.91B
| $2.09M | ﹤0.01% |
1,126
+414
| +58% | +$6.94K |
|
1247
PUT
Archer Daniels Midland
ADM
$41.6B
| $2.09M | ﹤0.01% |
594
-43
| -7% | -$1.76K |
|
1248
PUT
JetBlue
JBLU
$1.86B
| $2.09M | ﹤0.01% |
2,334
+1,875
| +408% | +$31.1K |
|
1249
CALL
ProShares UltraShort Industrials
SIJ
$5.78M
| $2.09M | ﹤0.01% |
61
+51
| +510% | +$10.3K |
|
|
VRNT
1250
DELISTED
Verint Systems
VRNT
| $2.08M | ﹤0.01% |
94,907
+55,188
| +139% | +$1.48M |
|
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.