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 | |
|---|---|---|---|---|---|---|
|
VER
1351
CALL
DELISTED
VEREIT, Inc.
VER
| $3.13M | ﹤0.01% |
830
+627
| +309% | +$22.3K |
|
1352
CALL
NetApp
NTAP
$32.8B
| $3.13M | ﹤0.01% |
473
+167
| +55% | +$8.82K |
|
1353
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $3.13M | ﹤0.01% |
237
+112
| +90% | +$14.3K |
|
1354
Crown Castle
CCI
$32.9B
| $3.13M | ﹤0.01% |
+19,667
| New | +$3.19M |
|
1355
PUT
DXC Technology
DXC
$1.64B
| $3.12M | ﹤0.01% |
1,210
+480
| +66% | +$10.2K |
|
1356
CALL
Tanger
SKT
$4.79B
| $3.11M | ﹤0.01% |
3,126
+1,351
| +76% | +$11.4K |
|
1357
PUT
United Parks & Resorts
PRKS
$2.12B
| $3.11M | ﹤0.01% |
984
-393
| -29% | -$10.2K |
|
1358
PUT
Williams Companies
WMB
$91.2B
| $3.11M | ﹤0.01% |
1,550
+911
| +143% | +$18.5K |
|
1359
PUT
Aon
AON
$77.2B
| $3.1M | ﹤0.01% |
147
-230
| -61% | -$47K |
|
|
BLDP
1360
CALL
Ballard Power Systems
BLDP
$862M
| $3.1M | ﹤0.01% |
1,327
+764
| +136% | +$14.1K |
|
1361
CALL
Hartford Financial Services
HIG
$38.5B
| $3.1M | ﹤0.01% |
633
+227
| +56% | +$9.79K |
|
1362
CALL
Pan American Silver
PAAS
$18.5B
| $3.1M | ﹤0.01% |
1,053
-1,210
| -53% | -$39.1K |
|
|
MDC
1363
PUT
DELISTED
M.D.C. Holdings, Inc.
MDC
| $3.1M | ﹤0.01% |
688
+447
| +185% | +$19.9K |
|
|
GOEV
1364
CALL
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $3.09M | ﹤0.01% |
5
+4
| +400% | +$23.7K |
|
1365
CALL
Toro Company
TTC
$8.91B
| $3.09M | ﹤0.01% |
326
-304
| -48% | -$26.9K |
|
1366
CALL
Cardlytics
CDLX
$21.6M
| $3.08M | ﹤0.01% |
22
+10
| +83% | +$10.7K |
|
1367
iQIYI
IQ
$1.19B
| $3.08M | ﹤0.01% |
176,071
+124,281
| +240% | +$2.8M |
|
1368
Chubb
CB
$139B
| $3.08M | ﹤0.01% |
+19,981
| New | +$2.8M |
|
1369
PUT
Nano X Imaging
NNOX
$62.6M
| $3.07M | ﹤0.01% |
673
+656
| +3,859% | +$26.8K |
|
|
FIRY
1370
PUT
Firy Inc
FIRY
$128M
| $3.07M | ﹤0.01% |
77
+54
| +235% | +$16K |
|
|
CTXS
1371
CALL
DELISTED
Citrix Systems Inc
CTXS
| $3.07M | ﹤0.01% |
236
-207
| -47% | -$26.3K |
|
1372
PUT
Synaptics
SYNA
$4.42B
| $3.06M | ﹤0.01% |
318
+286
| +894% | +$23.3K |
|
1373
PUT
NRG Energy
NRG
$29.5B
| $3.06M | ﹤0.01% |
816
+183
| +29% | +$6.02K |
|
1374
Occidental Petroleum
OXY
$57B
| $3.06M | ﹤0.01% |
176,900
-109,222
| -38% | -$1.5M |
|
1375
PUT
Thor Industries
THO
$4B
| $3.06M | ﹤0.01% |
329
-151
| -31% | -$14.2K |
|
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.