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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ZEN
1276
DELISTED
ZENDESK INC
ZEN
| $2.74M | ﹤0.01% |
26,660
-7,425
| -22% | -$695K |
|
1277
PUT
Capri Holdings
CPRI
$1.8B
| $2.74M | ﹤0.01% |
1,523
+378
| +33% | +$6.41K |
|
1278
PUT
MACOM Technology Solutions
MTSI
$20.5B
| $2.74M | ﹤0.01% |
806
+600
| +291% | +$21.8K |
|
1279
BioMarin Pharmaceuticals
BMRN
$11.5B
| $2.74M | ﹤0.01% |
35,999
+10,749
| +43% | +$1.09M |
|
|
ZNGA
1280
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $2.74M | ﹤0.01% |
300,081
+211,179
| +238% | +$1.96M |
|
1281
PUT
Chemours
CC
$2.6B
| $2.73M | ﹤0.01% |
1,306
-210
| -14% | -$4.05K |
|
1282
PUT
Dine Brands
DIN
$434M
| $2.73M | ﹤0.01% |
500
+214
| +75% | +$10.8K |
|
1283
CALL
GameStop
GME
$9.59B
| $2.73M | ﹤0.01% |
10,692
+5,288
| +98% | +$7.65K |
|
|
P
1284
CALL
Everpure Inc
P
$24.9B
| $2.72M | ﹤0.01% |
1,768
+133
| +8% | +$2.17K |
|
1285
PUT
United Parks & Resorts
PRKS
$2.12B
| $2.71M | ﹤0.01% |
1,377
-980
| -42% | -$17.9K |
|
|
USCR
1286
CALL
DELISTED
U S Concrete, Inc.
USCR
| $2.71M | ﹤0.01% |
935
+830
| +790% | +$22.4K |
|
1287
McDonald's
MCD
$189B
| $2.71M | ﹤0.01% |
12,352
-9,315
| -43% | -$1.91M |
|
|
NVO
1288
PUT
Novo Nordisk
NVO
$217B
| $2.7M | ﹤0.01% |
778
-140
| -15% | -$4.67K |
|
|
VRNT
1289
PUT
DELISTED
Verint Systems
VRNT
| $2.7M | ﹤0.01% |
1,099
+728
| +196% | +$17K |
|
1290
CALL
Adient
ADNT
$1.6B
| $2.69M | ﹤0.01% |
1,554
-755
| -33% | -$13.2K |
|
1291
PUT
CBRE Group
CBRE
$40.7B
| $2.69M | ﹤0.01% |
572
+82
| +17% | +$3.74K |
|
1292
PUT
Roper Technologies
ROP
$36.2B
| $2.69M | ﹤0.01% |
68
+32
| +89% | +$13.3K |
|
1293
Invesco S&P 500 Equal Weight ETF
RSP
$96B
| $2.69M | ﹤0.01% |
+24,848
| New | +$2.68M |
|
1294
CALL
Incyte
INCY
$23.6B
| $2.68M | ﹤0.01% |
299
-174
| -37% | -$16.8K |
|
1295
CALL
Cameco
CCJ
$38.2B
| $2.68M | ﹤0.01% |
2,656
+2,095
| +373% | +$22.7K |
|
1296
PUT
Weibo
WB
$1.91B
| $2.68M | ﹤0.01% |
736
-193
| -21% | -$6.82K |
|
1297
iShares Russell 1000 Value ETF
IWD
$82B
| $2.68M | ﹤0.01% |
+22,671
| New | +$2.69M |
|
1298
PUT
Digital Turbine
APPS
$1.01B
| $2.67M | ﹤0.01% |
817
+69
| +9% | +$1.49K |
|
1299
CALL
Axalta
AXTA
$7.08B
| $2.67M | ﹤0.01% |
1,204
+142
| +13% | +$3.29K |
|
1300
CALL
Royal Gold
RGLD
$17.1B
| $2.67M | ﹤0.01% |
222
-257
| -54% | -$33.8K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.