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 | |
|---|---|---|---|---|---|---|
201
PUT
Wynn Resorts
WYNN
$9.82B
| $25.3M | 0.04% |
4,202
+1,968
| +88% | +$220K |
|
202
PUT
Morgan Stanley
MS
$340B
| $25.1M | 0.04% |
7,375
+2,723
| +59% | +$128K |
|
203
CALL
Delta Air Lines
DAL
$55.7B
| $24.8M | 0.04% |
8,680
+1,643
| +23% | +$81.4K |
|
204
State Street SPDR S&P 500 ETF Trust
SPY
$787B
| $24.8M | 0.04% |
96,024
+62,877
| +190% | +$19.2M |
|
|
TWTR
205
CALL
DELISTED
Twitter, Inc.
TWTR
| $24.5M | 0.04% |
9,994
-416
| -4% | -$13.5K |
|
206
PUT
Abbott
ABT
$174B
| $24.4M | 0.04% |
3,095
+790
| +34% | +$65.9K |
|
207
CALL
Lam Research
LRCX
$403B
| $24.3M | 0.04% |
10,110
+3,010
| +42% | +$86.7K |
|
|
208
PUT
Lam Research
LRCX
$403B
| $23.9M | 0.04% |
9,960
-15,560
| -61% | -$448K |
|
209
PUT
Las Vegas Sands
LVS
$30.1B
| $23.9M | 0.04% |
5,617
+4,203
| +297% | +$254K |
|
210
PUT
Medtronic
MDT
$107B
| $23.7M | 0.04% |
2,624
-344
| -12% | -$36.6K |
|
211
PUT
Regeneron Pharmaceuticals
REGN
$70.5B
| $23.4M | 0.04% |
480
-458
| -49% | -$189K |
|
|
212
CALL
Las Vegas Sands
LVS
$30.1B
| $23.4M | 0.04% |
5,516
+2,093
| +61% | +$127K |
|
|
213
iShares Silver Trust
SLV
$28.4B
| $23.4M | 0.04% |
+1,789,892
| New | +$28.1M |
|
214
PUT
Wells Fargo
WFC
$266B
| $23.3M | 0.04% |
8,116
+5,672
| +232% | +$241K |
|
215
CALL
Lowe's Companies
LOW
$114B
| $23M | 0.04% |
2,675
+372
| +16% | +$40.6K |
|
216
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $23M | 0.04% |
2,155
+283
| +15% | +$79.3K |
|
|
ATVI
217
PUT
DELISTED
Activision Blizzard
ATVI
| $22.5M | 0.04% |
3,781
-1,336
| -26% | -$79.3K |
|
218
PUT
Clorox
CLX
$11.6B
| $22M | 0.04% |
1,269
+917
| +261% | +$152K |
|
219
CALL
American Airlines Group
AAL
$10.1B
| $22M | 0.04% |
18,027
+8,982
| +99% | +$205K |
|
220
PUT
Sea Limited
SE
$65.1B
| $21.8M | 0.04% |
4,922
+1,545
| +46% | +$69.3K |
|
221
PUT
Invesco CurrencyShares Japanese Yen Trust
FXY
$424M
| $21.7M | 0.04% |
2,465
+1,841
| +295% | +$160K |
|
222
CALL
GE Aerospace
GE
$353B
| $21.7M | 0.04% |
5,474
+2,136
| +64% | +$114K |
|
223
PUT
Lyft
LYFT
$5.77B
| $21.2M | 0.04% |
7,892
+5,552
| +237% | +$221K |
|
|
WORK
224
PUT
DELISTED
Slack Technologies, Inc.
WORK
| $21.2M | 0.04% |
7,881
+6,695
| +565% | +$161K |
|
225
PUT
Newmont
NEM
$98.7B
| $21.1M | 0.04% |
4,671
+2,049
| +78% | +$92.5K |
|
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.