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 | |
|---|---|---|---|---|---|---|
2976
Invesco Water Resources ETF
PHO
$1.97B
| $350K | ﹤0.01% |
11,193
+11,053
| +7,895% | +$410K |
|
2977
CALL
Simply Good Foods
SMPL
$904M
| $350K | ﹤0.01% |
182
+127
| +231% | +$2.78K |
|
2978
PUT
Wingstop
WING
$3.68B
| $350K | ﹤0.01% |
44
-39
| -47% | -$3.34K |
|
|
EPZM
2979
DELISTED
Epizyme, Inc
EPZM
| $350K | ﹤0.01% |
22,584
+20,023
| +782% | +$430K |
|
2980
CALL
Wabash National
WNC
$543M
| $349K | ﹤0.01% |
484
-40
| -8% | -$448 |
|
|
TWOU
2981
DELISTED
2U Inc
TWOU
| $349K | ﹤0.01% |
549
-357
| -39% | -$241K |
|
2982
CALL
Monster Beverage
MNST
$91.4B
| $348K | ﹤0.01% |
124
-1,384
| -92% | -$44.5K |
|
|
ZGNX
2983
PUT
DELISTED
Zogenix, Inc.
ZGNX
| $348K | ﹤0.01% |
141
-482
| -77% | -$17.6K |
|
2984
Ichor Holdings
ICHR
$3.02B
| $347K | ﹤0.01% |
18,131
+9,815
| +118% | +$297K |
|
2985
PUT
Tucows
TCX
$97.1M
| $347K | ﹤0.01% |
72
-7
| -9% | -$392 |
|
2986
PUT
Telecom Argentina
TEO
$5.89B
| $347K | ﹤0.01% |
377
-1,421
| -79% | -$15.5K |
|
2987
CALL
Crocs
CROX
$6.69B
| $346K | ﹤0.01% |
204
-90
| -31% | -$2.87K |
|
|
FOLD
2988
PUT
DELISTED
Amicus Therapeutics
FOLD
| $346K | ﹤0.01% |
375
+260
| +226% | +$2.47K |
|
|
GLDD
2989
DELISTED
Great Lakes Dredge & Dock
GLDD
| $346K | ﹤0.01% |
+41,793
| New | +$416K |
|
2990
Quanta Services
PWR
$93.9B
| $346K | ﹤0.01% |
10,910
+8,262
| +312% | +$307K |
|
|
LCI
2991
PUT
DELISTED
Lannett Company, Inc.
LCI
| $346K | ﹤0.01% |
125
-315
| -72% | -$10.6K |
|
|
STAY
2992
PUT
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
| $346K | ﹤0.01% |
474
+463
| +4,209% | +$5.32K |
|
|
TERP
2993
PUT
DELISTED
TerraForm Power, Inc
TERP
| $346K | ﹤0.01% |
220
+190
| +633% | +$3.31K |
|
|
MRSH
2994
CALL
Marsh
MRSH
$86.3B
| $345K | ﹤0.01% |
40
-11
| -22% | -$1.17K |
|
2995
PUT
Clarivate
CLVT
$1.3B
| $344K | ﹤0.01% |
166
-192
| -54% | -$3.84K |
|
2996
Evercore
EVR
$13.1B
| $344K | ﹤0.01% |
+7,469
| New | +$500K |
|
2997
CALL
Hecla Mining
HL
$10.2B
| $344K | ﹤0.01% |
1,894
+400
| +27% | +$1.11K |
|
2998
CALL
Insmed
INSM
$23.2B
| $344K | ﹤0.01% |
215
+3
| +1% | +$71 |
|
2999
CALL
Children's Place
PLCE
$53.6M
| $344K | ﹤0.01% |
176
-247
| -58% | -$13.1K |
|
3000
CALL
ZTO Express
ZTO
$18.2B
| $344K | ﹤0.01% |
130
-263
| -67% | -$6.38K |
|
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.