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 | |
|---|---|---|---|---|---|---|
226
PUT
Applied Materials
AMAT
$448B
| $21.1M | 0.04% |
4,607
-2,705
| -37% | -$155K |
|
227
PUT
NXP Semiconductors
NXPI
$69B
| $21M | 0.04% |
2,534
-63
| -2% | -$7.38K |
|
228
PUT
Carnival Corporation Ltd
CCL
$35.8B
| $20.9M | 0.04% |
15,895
+14,737
| +1,273% | +$524K |
|
229
CALL
FedEx
FDX
$73.1B
| $20.9M | 0.04% |
1,724
-769
| -31% | -$108K |
|
230
PUT
Trade Desk
TTD
$8.58B
| $20.8M | 0.04% |
10,780
+3,380
| +46% | +$87.5K |
|
|
231
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $20.7M | 0.04% |
+94,580
| New | +$25.1M |
|
232
Broadcom
AVGO
$1.84T
| $20.7M | 0.04% |
873,810
+438,740
| +101% | +$12.4M |
|
233
PUT
TSMC
TSM
$2.2T
| $20.7M | 0.04% |
4,329
+683
| +19% | +$37.4K |
|
|
234
JPMorgan Chase
JPM
$918B
| $20.5M | 0.04% |
227,460
+201,454
| +775% | +$24.5M |
|
235
PUT
Texas Instruments
TXN
$265B
| $20.5M | 0.04% |
2,048
-207
| -9% | -$24.8K |
|
236
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $20.2M | 0.04% |
64,360
+31,920
| +98% | +$743K |
|
237
CALL
Wynn Resorts
WYNN
$9.82B
| $20.1M | 0.04% |
3,347
+484
| +17% | +$54.2K |
|
|
SHNY
238
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $20.1M | 0.04% |
12,646
+2,741
| +28% | +$4.36M |
|
239
Bristol-Myers Squibb
BMY
$124B
| $19.8M | 0.04% |
356,002
+164,287
| +86% | +$10M |
|
240
PUT
American Express
AXP
$239B
| $19.8M | 0.03% |
2,311
-631
| -21% | -$73.4K |
|
241
PUT
Pfizer
PFE
$142B
| $19.8M | 0.03% |
6,385
+1,133
| +22% | +$38.6K |
|
242
PUT
Royal Caribbean
RCL
$77.2B
| $19.7M | 0.03% |
6,128
+3,534
| +136% | +$323K |
|
|
RAD
243
CALL
DELISTED
Rite Aid Corporation
RAD
| $19.7M | 0.03% |
13,123
-4,960
| -27% | -$69.4K |
|
244
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$433M
| $19.4M | 0.03% |
7,234
+6,780
| +1,493% | +$180K |
|
245
CALL
Abbott
ABT
$174B
| $19.3M | 0.03% |
2,446
+628
| +35% | +$52.4K |
|
246
CALL
Occidental Petroleum
OXY
$56.2B
| $19.3M | 0.03% |
+16,669
| New | +$547K |
|
247
Uber
UBER
$146B
| $19.1M | 0.03% |
684,959
+573,585
| +515% | +$18.9M |
|
248
CALL
Oracle
ORCL
$366B
| $19.1M | 0.03% |
3,952
-1,843
| -32% | -$95.1K |
|
249
CALL
ProShares Ultra S&P500
SSO
$8.04B
| $19M | 0.03% |
24,912
+18,728
| +303% | +$316K |
|
|
250
CALL
Trade Desk
TTD
$8.58B
| $19M | 0.03% |
9,860
-4,150
| -30% | -$107K |
|
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.