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 | |
|---|---|---|---|---|---|---|
251
Adobe
ADBE
$90.1B
| $18.9M | 0.03% |
59,377
+53,442
| +900% | +$18.3M |
|
252
PUT
NextEra Energy
NEE
$185B
| $18.7M | 0.03% |
3,104
+36
| +1% | +$2.26K |
|
253
CALL
ProShares UltraShort Health Care
RXD
$3.35M
| $18.6M | 0.03% |
1,833
-272
| -13% | -$20K |
|
254
PUT
Lowe's Companies
LOW
$115B
| $18.6M | 0.03% |
2,159
-520
| -19% | -$56.8K |
|
255
PUT
United Airlines
UAL
$37.7B
| $18.6M | 0.03% |
5,886
+3,717
| +171% | +$246K |
|
256
CALL
Medtronic
MDT
$106B
| $18.6M | 0.03% |
2,057
+425
| +26% | +$45.2K |
|
257
CALL
Caterpillar
CAT
$407B
| $18.3M | 0.03% |
1,580
-841
| -35% | -$107K |
|
258
PUT
Elevance Health
ELV
$85.3B
| $18.3M | 0.03% |
806
-345
| -30% | -$94K |
|
259
CALL
American Tower
AMT
$76.5B
| $18.3M | 0.03% |
840
-382
| -31% | -$88.9K |
|
|
TIF
260
CALL
DELISTED
Tiffany & Co.
TIF
| $18.3M | 0.03% |
1,411
+728
| +107% | +$95.8K |
|
261
PUT
Skyworks Solutions
SWKS
$9.43B
| $18.2M | 0.03% |
2,034
-104
| -5% | -$11.1K |
|
262
PUT
Becton Dickinson
BDX
$42.6B
| $17.9M | 0.03% |
801
+720
| +889% | +$178K |
|
263
PUT
Thermo Fisher Scientific
TMO
$195B
| $17.9M | 0.03% |
630
+276
| +78% | +$87K |
|
264
CALL
Ulta Beauty
ULTA
$21.1B
| $17.5M | 0.03% |
997
-2,165
| -68% | -$540K |
|
265
iShares Russell 2000 ETF
IWM
$82.4B
| $17.3M | 0.03% |
+151,016
| New | +$22.5M |
|
|
RDS.A
266
CALL
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $17.3M | 0.03% |
5,056
+2,228
| +79% | +$104K |
|
267
CALL
Charter Communications
CHTR
$15.9B
| $17.2M | 0.03% |
395
+60
| +18% | +$29.3K |
|
268
CALL
Texas Instruments
TXN
$263B
| $17M | 0.03% |
1,703
-552
| -24% | -$66.2K |
|
269
PUT
Ferrari
RACE
$65.9B
| $16.9M | 0.03% |
1,107
-128
| -10% | -$20.6K |
|
270
CALL
Accenture
ACN
$87.3B
| $16.7M | 0.03% |
1,025
-9
| -0.9% | -$1.73K |
|
271
CALL
eBay
EBAY
$50.1B
| $16.7M | 0.03% |
5,550
+3,718
| +203% | +$130K |
|
272
CALL
Teladoc Health
TDOC
$1.74B
| $16.7M | 0.03% |
1,075
+630
| +142% | +$73.3K |
|
273
PUT
Tyson Foods
TSN
$20.3B
| $16.6M | 0.03% |
2,874
+1,685
| +142% | +$126K |
|
|
ALXN
274
PUT
DELISTED
Alexion Pharmaceuticals
ALXN
| $16.6M | 0.03% |
1,848
+699
| +61% | +$68.6K |
|
275
PUT
Union Pacific
UNP
$175B
| $16.6M | 0.03% |
1,176
-957
| -45% | -$158K |
|
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.