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 | |
|---|---|---|---|---|---|---|
451
PUT
Vanguard FTSE Europe ETF
VGK
$30.2B
| $14.2M | 0.02% |
2,618
+1,254
| +92% | +$70.6K |
|
452
CALL
Autodesk
ADSK
$43B
| $14.1M | 0.02% |
463
-266
| -36% | -$70.1K |
|
453
CALL
Sherwin-Williams
SHW
$78.9B
| $14.1M | 0.02% |
576
-147
| -20% | -$34.9K |
|
454
CALL
General Mills
GIS
$19.7B
| $14.1M | 0.02% |
2,399
+1,118
| +87% | +$67.6K |
|
455
PUT
Elastic
ESTC
$6.1B
| $14M | 0.02% |
956
-34
| -3% | -$4.18K |
|
456
PUT
Match Group
MTCH
$8.87B
| $13.9M | 0.02% |
920
-348
| -27% | -$46K |
|
457
CALL
Blackstone
BX
$150B
| $13.9M | 0.02% |
2,143
-541
| -20% | -$31.5K |
|
458
PUT
Cigna
CI
$75.4B
| $13.8M | 0.02% |
664
-79
| -11% | -$15.5K |
|
459
PUT
Cummins
CMI
$91.2B
| $13.7M | 0.02% |
604
+213
| +54% | +$47.8K |
|
460
PUT
Veeva Systems
VEEV
$30B
| $13.6M | 0.02% |
501
+197
| +65% | +$55.2K |
|
461
PUT
ConocoPhillips
COP
$145B
| $13.6M | 0.02% |
3,395
+267
| +9% | +$9.84K |
|
|
B
462
CALL
Barrick Mining
B
$62.8B
| $13.5M | 0.02% |
5,948
-3,946
| -40% | -$100K |
|
463
CALL
Linde
LIN
$235B
| $13.5M | 0.02% |
513
+260
| +103% | +$63.8K |
|
464
CALL
Novartis
NVS
$292B
| $13.5M | 0.02% |
1,443
-174
| -11% | -$15.2K |
|
|
JWN
465
CALL
DELISTED
Nordstrom
JWN
| $13.5M | 0.02% |
4,322
+2,376
| +122% | +$49.6K |
|
466
CALL
Elevance Health
ELV
$84.4B
| $13.5M | 0.02% |
420
-5
| -1% | -$1.53K |
|
|
467
CALL
Veeva Systems
VEEV
$30B
| $13.5M | 0.02% |
495
-28
| -5% | -$7.84K |
|
|
468
CALL
Match Group
MTCH
$8.87B
| $13.5M | 0.02% |
891
+571
| +178% | +$75.5K |
|
469
CALL
NovoCure
NVCR
$1.8B
| $13.4M | 0.02% |
775
-42
| -5% | -$5.75K |
|
470
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$332M
| $13.4M | 0.02% |
1,167
-1,362
| -54% | -$153K |
|
471
CALL
Amgen
AMGN
$198B
| $13.4M | 0.02% |
1,071
+110
| +11% | +$25.4K |
|
472
CALL
Equity Residential
EQR
$25.6B
| $13.3M | 0.02% |
2,244
-722
| -24% | -$40.8K |
|
473
CALL
Intercontinental Exchange
ICE
$80.6B
| $13.3M | 0.02% |
1,151
+448
| +64% | +$46.5K |
|
474
CALL
Lemonade
LMND
$4.87B
| $13.2M | 0.02% |
1,076
+639
| +146% | +$47.1K |
|
475
CALL
Arista Networks
ANET
$220B
| $13.2M | 0.02% |
7,248
+3,952
| +120% | +$62.6K |
|
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.