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 | |
|---|---|---|---|---|---|---|
2601
CALL
Assured Guaranty
AGO
$3.78B
| $969K | ﹤0.01% |
308
-137
| -31% | -$4.02K |
|
2602
International Flavors & Fragrances
IFF
$19.4B
| $969K | ﹤0.01% |
+8,909
| New | +$1,000K |
|
2603
PUT
Jacobs Solutions
J
$15.9B
| $969K | ﹤0.01% |
108
-224
| -67% | -$19K |
|
2604
CALL
Texas Roadhouse
TXRH
$12.7B
| $969K | ﹤0.01% |
124
-135
| -52% | -$10.1K |
|
2605
CALL
Equinox Gold
EQX
$7.32B
| $968K | ﹤0.01% |
937
+642
| +218% | +$7K |
|
2606
PUT
Fox Class B
FOX
$20.7B
| $968K | ﹤0.01% |
333
-575
| -63% | -$15.9K |
|
2607
PUT
Northern Trust
NTRS
$22.2B
| $968K | ﹤0.01% |
104
-277
| -73% | -$24.4K |
|
|
FITB
2608
CALL
Fifth Third Bancorp
FITB
$52B
| $967K | ﹤0.01% |
351
-2,177
| -86% | -$54.9K |
|
2609
Fortive
FTV
$19B
| $965K | ﹤0.01% |
18,094
+17,515
| +3,025% | +$901K |
|
2610
PUT
H&R Block
HRB
$5.18B
| $964K | ﹤0.01% |
608
+337
| +124% | +$5.82K |
|
2611
SLM Corp
SLM
$4.57B
| $962K | ﹤0.01% |
77,711
+9,178
| +13% | +$96.5K |
|
2612
CALL
YPF
YPF
$20.2B
| $961K | ﹤0.01% |
2,046
+74
| +4% | +$327 |
|
|
2613
JPMorgan Chase
JPM
$939B
| $960K | ﹤0.01% |
7,558
-472,128
| -98% | -$52.8M |
|
|
EMBJ
2614
Embraer S.A. ADS
EMBJ
$11.6B
| $958K | ﹤0.01% |
140,819
+96,430
| +217% | +$547K |
|
|
FOLD
2615
DELISTED
Amicus Therapeutics
FOLD
| $958K | ﹤0.01% |
41,531
+8,923
| +27% | +$182K |
|
|
JNPR
2616
PUT
DELISTED
Juniper Networks
JNPR
| $958K | ﹤0.01% |
426
-352
| -45% | -$7.68K |
|
2617
PUT
Lennox International
LII
$18.8B
| $958K | ﹤0.01% |
35
-42
| -55% | -$11.9K |
|
|
MPT
2618
PUT
Medical Properties Trust
MPT
$2.89B
| $958K | ﹤0.01% |
440
-205
| -32% | -$3.99K |
|
2619
ADT
ADT
$5.16B
| $957K | ﹤0.01% |
121,930
+19,374
| +19% | +$152K |
|
|
FABC
2620
CALL
Fabric.AI Inc
FABC
$16.8M
| $957K | ﹤0.01% |
+12
| New | +$7.3K |
|
2621
PUT
Hyatt Hotels
H
$17.6B
| $957K | ﹤0.01% |
129
-227
| -64% | -$14.8K |
|
|
SOL
2622
DELISTED
Emeren Group
SOL
| $957K | ﹤0.01% |
+83,790
| New | +$456K |
|
|
GWPH
2623
PUT
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $957K | ﹤0.01% |
83
-112
| -57% | -$12.5K |
|
2624
Sherwin-Williams
SHW
$78.3B
| $956K | ﹤0.01% |
+3,906
| New | +$927K |
|
2625
PUT
Winnebago Industries
WGO
$870M
| $953K | ﹤0.01% |
159
-149
| -48% | -$8.13K |
|
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.