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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
301
CALL
Clorox
CLX
$11.7B
| $25.8M | 0.03% |
1,277
+432
| +51% | +$89.4K |
|
302
PUT
Gaotu Techedu
GOTU
$398M
| $25.7M | 0.03% |
4,967
-973
| -16% | -$71K |
|
303
CALL
Oracle
ORCL
$362B
| $25.7M | 0.03% |
3,969
-3,294
| -45% | -$196K |
|
304
PUT
Las Vegas Sands
LVS
$30.5B
| $25.6M | 0.03% |
4,296
-554
| -11% | -$29.5K |
|
305
CALL
Plug Power
PLUG
$3.19B
| $25.2M | 0.03% |
7,432
+4,583
| +161% | +$104K |
|
306
PUT
Hilton Worldwide
HLT
$74.2B
| $24.7M | 0.03% |
2,221
-1,362
| -38% | -$135K |
|
307
PUT
NXP Semiconductors
NXPI
$70.2B
| $24.2M | 0.03% |
1,524
-921
| -38% | -$136K |
|
308
CALL
3M
MMM
$89.4B
| $24.2M | 0.03% |
1,653
-161
| -9% | -$22.9K |
|
309
CALL
Novavax
NVAX
$1.31B
| $24.1M | 0.03% |
2,164
+230
| +12% | +$24.4K |
|
310
CALL
Take-Two Interactive
TTWO
$43.3B
| $24.1M | 0.03% |
1,161
-1,462
| -56% | -$256K |
|
311
PUT
Domino's
DPZ
$10.7B
| $24M | 0.03% |
625
+314
| +101% | +$123K |
|
312
CALL
ProShares UltraShort Health Care
RXD
$3.35M
| $23.9M | 0.03% |
4,718
-1,140
| -19% | -$48.1K |
|
313
CALL
Zscaler
ZS
$23.2B
| $23.8M | 0.03% |
1,194
-172
| -13% | -$27.4K |
|
|
SCHW
314
PUT
Charles Schwab
SCHW
$174B
| $23.8M | 0.03% |
4,488
+787
| +21% | +$35.6K |
|
315
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$332M
| $23.6M | 0.03% |
2,060
-467
| -18% | -$52.4K |
|
|
316
CALL
Las Vegas Sands
LVS
$30.5B
| $23.6M | 0.03% |
3,955
-1,192
| -23% | -$63.6K |
|
317
CALL
Occidental Petroleum
OXY
$57B
| $23.2M | 0.03% |
6,385
-349
| -5% | -$4.79K |
|
318
PUT
DuPont de Nemours
DD
$18.9B
| $23.2M | 0.03% |
2,623
+58
| +2% | +$4.55K |
|
|
DFS
319
PUT
DELISTED
Discover Financial Services
DFS
| $23.1M | 0.03% |
2,552
-291
| -10% | -$21.7K |
|
|
TIF
320
CALL
DELISTED
Tiffany & Co.
TIF
| $23.1M | 0.03% |
1,755
-547
| -24% | -$70K |
|
321
CALL
Norwegian Cruise Line
NCLH
$8.99B
| $23M | 0.03% |
9,059
+2,582
| +40% | +$53.9K |
|
|
SCHW
322
CALL
Charles Schwab
SCHW
$174B
| $22.8M | 0.03% |
4,300
+1,467
| +52% | +$66.4K |
|
323
CALL
Marathon Petroleum
MPC
$93.3B
| $22.8M | 0.03% |
5,514
+490
| +10% | +$17.6K |
|
324
CALL
Philip Morris
PM
$305B
| $22.8M | 0.03% |
2,750
+735
| +36% | +$57.2K |
|
325
CALL
XPeng
XPEV
$12.4B
| $22.6M | 0.03% |
5,268
+5,190
| +6,654% | +$191K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.