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 | |
|---|---|---|---|---|---|---|
576
CALL
Kroger
KR
$35.3B
| $10.3M | 0.01% |
3,249
+1,154
| +55% | +$37.4K |
|
577
PUT
MSCI
MSCI
$41.6B
| $10.3M | 0.01% |
231
+196
| +560% | +$76.9K |
|
578
PUT
Northrop Grumman
NOC
$74.6B
| $10.3M | 0.01% |
338
+34
| +11% | +$10.4K |
|
579
CALL
Wolfspeed
WOLF
$1.52B
| $10.3M | 0.01% |
971
+528
| +119% | +$42.4K |
|
580
CALL
ArcelorMittal
MT
$50.1B
| $10.3M | 0.01% |
4,483
+2,054
| +85% | +$35.9K |
|
581
CALL
Intuit
INTU
$77.8B
| $10.3M | 0.01% |
270
+94
| +53% | +$33K |
|
|
ABMD
582
PUT
DELISTED
Abiomed Inc
ABMD
| $10.2M | 0.01% |
316
-193
| -38% | -$53.4K |
|
583
CALL
Dollar General
DG
$26.5B
| $10.2M | 0.01% |
487
-487
| -50% | -$104K |
|
|
STZ.B
584
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $10.2M | 0.01% |
466
-280
| -38% | -$55.6K |
|
|
NKLA
585
CALL
DELISTED
Nikola Corporation Common Stock
NKLA
| $10.2M | 0.01% |
223
-161
| -42% | -$100K |
|
586
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $10.2M | 0.01% |
2,546
-1,236
| -33% | -$32.2K |
|
587
PUT
BP
BP
$112B
| $10.2M | 0.01% |
4,964
-327
| -6% | -$6.16K |
|
588
CALL
Norfolk Southern
NSC
$74.3B
| $10.2M | 0.01% |
428
+168
| +65% | +$38.2K |
|
|
WBA
589
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $10.2M | 0.01% |
2,550
-391
| -13% | -$15.1K |
|
590
Medtronic
MDT
$105B
| $10.1M | 0.01% |
85,851
+69,528
| +426% | +$7.65M |
|
591
CALL
Petrobras
PBR
$122B
| $10.1M | 0.01% |
8,951
+4,368
| +95% | +$38.7K |
|
592
PUT
FuboTV Inc
FUBO
$265M
| $10M | 0.01% |
+299
| New | +$81.9K |
|
593
PUT
Tyler Technologies
TYL
$11.7B
| $10M | 0.01% |
230
+228
| +11,400% | +$94.1K |
|
|
B
594
Barrick Mining
B
$62.8B
| $10M | 0.01% |
440,033
+27,180
| +7% | +$689K |
|
595
PUT
Darden Restaurants
DRI
$22.2B
| $9.98M | 0.01% |
838
-1,169
| -58% | -$125K |
|
596
CALL
C.H. Robinson
CHRW
$24.4B
| $9.96M | 0.01% |
1,061
+164
| +18% | +$15.6K |
|
597
CALL
Chubb
CB
$133B
| $9.96M | 0.01% |
647
-219
| -25% | -$30.7K |
|
598
CALL
Universal Display
OLED
$3.81B
| $9.95M | 0.01% |
433
-27
| -6% | -$5.77K |
|
599
PUT
Truist Financial
TFC
$63.2B
| $9.95M | 0.01% |
2,075
+264
| +15% | +$12K |
|
600
Teladoc Health
TDOC
$1.61B
| $9.91M | 0.01% |
49,563
-6,733
| -12% | -$1.37M |
|
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.