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 | |
|---|---|---|---|---|---|---|
|
NEWR
2326
DELISTED
New Relic, Inc.
NEWR
| $1.21M | ﹤0.01% |
18,478
+10,273
| +125% | +$633K |
|
2327
PUT
LKQ Corp
LKQ
$6.58B
| $1.21M | ﹤0.01% |
342
+298
| +677% | +$10.2K |
|
|
HOME
2328
PUT
DELISTED
At Home Group Inc.
HOME
| $1.2M | ﹤0.01% |
779
+149
| +24% | +$2.6K |
|
|
SDC
2329
CALL
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
| $1.2M | ﹤0.01% |
1,007
-687
| -41% | -$7.78K |
|
|
SRCL
2330
PUT
DELISTED
Stericycle Inc
SRCL
| $1.2M | ﹤0.01% |
173
+72
| +71% | +$4.93K |
|
|
ME
2331
DELISTED
23andMe Holding Co
ME
| $1.2M | ﹤0.01% |
+5,248
| New | +$1.17M |
|
2332
Stryker
SYK
$127B
| $1.2M | ﹤0.01% |
+4,889
| New | +$1.11M |
|
2333
PUT
Angi Inc
ANGI
$224M
| $1.19M | ﹤0.01% |
91
-7
| -7% | -$812 |
|
2334
CALL
Brookfield
BN
$102B
| $1.19M | ﹤0.01% |
540
+278
| +106% | +$5.56K |
|
2335
CALL
NCR Voyix
VYX
$1.06B
| $1.19M | ﹤0.01% |
517
-815
| -61% | -$13.5K |
|
2336
CALL
Moody's
MCO
$81.7B
| $1.19M | ﹤0.01% |
41
-45
| -52% | -$12.6K |
|
|
TRIT
2337
CALL
DELISTED
Triterras, Inc. Class A Ordinary Shares
TRIT
| $1.19M | ﹤0.01% |
+1,078
| New | +$12.6K |
|
2338
CALL
Amplify Online Retail ETF
IBUY
$106M
| $1.19M | ﹤0.01% |
359
+267
| +290% | +$27.2K |
|
2339
CALL
Natera
NTRA
$37.5B
| $1.18M | ﹤0.01% |
119
+85
| +250% | +$7.1K |
|
2340
Oneok
OKE
$58.7B
| $1.18M | ﹤0.01% |
+30,874
| New | +$1.04M |
|
|
BIG
2341
CALL
DELISTED
Big Lots, Inc.
BIG
| $1.18M | ﹤0.01% |
276
-259
| -48% | -$12.6K |
|
|
CBPO
2342
CALL
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $1.18M | ﹤0.01% |
100
+18
| +22% | +$2.09K |
|
2343
CALL
National Beverage
FIZZ
$2.87B
| $1.18M | ﹤0.01% |
278
-122
| -31% | -$5.25K |
|
2344
Intuit
INTU
$81.1B
| $1.18M | ﹤0.01% |
3,104
+165
| +6% | +$57.9K |
|
2345
Teva Pharmaceuticals
TEVA
$35.9B
| $1.18M | ﹤0.01% |
122,087
-67,347
| -36% | -$645K |
|
2346
CALL
Tyler Technologies
TYL
$12.2B
| $1.18M | ﹤0.01% |
27
+19
| +238% | +$7.84K |
|
2347
CALL
Church & Dwight Co
CHD
$23.1B
| $1.18M | ﹤0.01% |
135
-121
| -47% | -$10.7K |
|
2348
Melco Resorts & Entertainment
MLCO
$2.1B
| $1.18M | ﹤0.01% |
63,496
-69,625
| -52% | -$1.21M |
|
2349
CALL
Wendy's
WEN
$1.33B
| $1.18M | ﹤0.01% |
537
-734
| -58% | -$16.7K |
|
|
ZEN
2350
DELISTED
ZENDESK INC
ZEN
| $1.18M | ﹤0.01% |
8,217
-18,443
| -69% | -$2.29M |
|
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.