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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1176
CALL
Weibo
WB
$1.93B
| $3.06M | ﹤0.01% |
911
+639
| +235% | +$21.9K |
|
1177
CALL
Ambarella
AMBA
$2.96B
| $3.06M | ﹤0.01% |
668
-72
| -10% | -$3.71K |
|
|
CLDR
1178
PUT
DELISTED
Cloudera, Inc.
CLDR
| $3.05M | ﹤0.01% |
2,395
+2,066
| +628% | +$19.9K |
|
1179
PUT
Perrigo
PRGO
$1.41B
| $3.04M | ﹤0.01% |
550
+143
| +35% | +$7.53K |
|
1180
CALL
Henry Schein
HSIC
$9.68B
| $3.04M | ﹤0.01% |
520
+248
| +91% | +$13.9K |
|
|
JNPR
1181
PUT
DELISTED
Juniper Networks
JNPR
| $3.03M | ﹤0.01% |
1,325
+1,108
| +511% | +$25.5K |
|
1182
PUT
OneMain Financial
OMF
$6.85B
| $3.02M | ﹤0.01% |
1,233
+1,059
| +609% | +$24.1K |
|
|
ZEN
1183
DELISTED
ZENDESK INC
ZEN
| $3.02M | ﹤0.01% |
34,085
+31,892
| +1,454% | +$2.46M |
|
1184
CALL
Keysight
KEYS
$54.8B
| $3.01M | ﹤0.01% |
299
-31
| -9% | -$3.04K |
|
1185
PUT
SAP
SAP
$183B
| $3.01M | ﹤0.01% |
215
-757
| -78% | -$93.3K |
|
|
NVO
1186
PUT
Novo Nordisk
NVO
$217B
| $3M | ﹤0.01% |
918
+116
| +14% | +$3.7K |
|
1187
PUT
Gildan
GIL
$9.11B
| $3M | ﹤0.01% |
1,939
+1,271
| +190% | +$18.8K |
|
1188
CALL
EPR Properties
EPR
$4.8B
| $3M | ﹤0.01% |
906
+632
| +231% | +$18.8K |
|
1189
Bilibili
BILI
$7.26B
| $2.98M | ﹤0.01% |
64,407
-32,576
| -34% | -$1.06M |
|
1190
PUT
The Mosaic Company
MOS
$7.16B
| $2.97M | ﹤0.01% |
2,375
+1,751
| +281% | +$21K |
|
1191
CALL
Diamondback Energy
FANG
$58.5B
| $2.96M | ﹤0.01% |
709
+305
| +75% | +$12.5K |
|
1192
CALL
Cheesecake Factory
CAKE
$4.19B
| $2.95M | ﹤0.01% |
1,289
+830
| +181% | +$17.5K |
|
1193
CALL
Alpha Pro Tech
APT
$50.8M
| $2.95M | ﹤0.01% |
1,667
-698
| -30% | -$9.64K |
|
|
SIX
1194
PUT
DELISTED
Six Flags Entertainment Corp.
SIX
| $2.95M | ﹤0.01% |
1,536
+529
| +53% | +$10.5K |
|
1195
CALL
Groupon
GRPN
$969M
| $2.95M | ﹤0.01% |
1,628
+1,518
| +1,380% | +$33.8K |
|
1196
CALL
BCE
BCE
$19.8B
| $2.94M | ﹤0.01% |
704
+519
| +281% | +$21.4K |
|
1197
CALL
Otis Worldwide
OTIS
$27.3B
| $2.94M | ﹤0.01% |
+517
| New | +$26.8K |
|
1198
CALL
Dover
DOV
$27.3B
| $2.94M | ﹤0.01% |
304
+293
| +2,664% | +$27K |
|
1199
PUT
Burlington
BURL
$21.4B
| $2.93M | ﹤0.01% |
149
-281
| -65% | -$52.9K |
|
|
SCIU
1200
CALL
DELISTED
Global X Scientific Beta US ETF
SCIU
| $2.93M | ﹤0.01% |
976
-63
| -6% | -$1.91K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.