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 | |
|---|---|---|---|---|---|---|
951
PUT
General Dynamics
GD
$103B
| $4.26M | 0.01% |
285
-83
| -23% | -$11.7K |
|
952
CALL
Ross Stores
ROST
$74.5B
| $4.24M | 0.01% |
498
+4
| +0.8% | +$362 |
|
953
CALL
Halliburton
HAL
$27.3B
| $4.23M | 0.01% |
3,261
-3,129
| -49% | -$33.7K |
|
954
CALL
Liberty Global Class C
LBTYK
$3.37B
| $4.22M | 0.01% |
1,960
+1,439
| +276% | +$28.7K |
|
955
CALL
LyondellBasell Industries
LYB
$19.9B
| $4.22M | 0.01% |
642
-35
| -5% | -$2.08K |
|
956
PUT
Pan American Silver
PAAS
$18.6B
| $4.22M | 0.01% |
1,388
+538
| +63% | +$12.8K |
|
957
CALL
Dell
DELL
$284B
| $4.21M | 0.01% |
1,513
+227
| +18% | +$5.1K |
|
958
CALL
Wingstop
WING
$3.67B
| $4.21M | 0.01% |
303
+204
| +206% | +$23.8K |
|
|
KL
959
PUT
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $4.21M | 0.01% |
1,021
+144
| +16% | +$5.57K |
|
960
PUT
Edwards Lifesciences
EW
$48.3B
| $4.21M | 0.01% |
609
+12
| +2% | +$853 |
|
|
PXD
961
CALL
DELISTED
Pioneer Natural Resource Co.
PXD
| $4.2M | 0.01% |
430
-92
| -18% | -$8.11K |
|
962
PUT
Ally Financial
ALLY
$13.4B
| $4.2M | 0.01% |
2,118
+431
| +26% | +$7.33K |
|
963
PUT
Viatris
VTRS
$20.1B
| $4.19M | 0.01% |
2,604
-152
| -6% | -$2.46K |
|
|
RP
964
PUT
DELISTED
RealPage, Inc.
RP
| $4.17M | 0.01% |
641
-173
| -21% | -$10.9K |
|
965
PUT
Campbell Soup
CPB
$6.38B
| $4.16M | 0.01% |
839
+710
| +550% | +$35.3K |
|
966
CALL
United Parks & Resorts
PRKS
$2.08B
| $4.16M | 0.01% |
2,809
+2,301
| +453% | +$33.9K |
|
|
INFO
967
CALL
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $4.16M | 0.01% |
551
-157
| -22% | -$10.7K |
|
968
PUT
Five Below
FIVE
$11.1B
| $4.16M | 0.01% |
389
-747
| -66% | -$70K |
|
969
CALL
WEX
WEX
$5.94B
| $4.16M | 0.01% |
252
+205
| +436% | +$28.1K |
|
970
CALL
Gentex
GNTX
$5.07B
| $4.15M | 0.01% |
1,612
+1,154
| +252% | +$28.9K |
|
971
PUT
Iron Mountain
IRM
$37.1B
| $4.13M | 0.01% |
1,583
-272
| -15% | -$6.87K |
|
972
iShares Expanded Tech-Software Sector ETF
IGV
$12.9B
| $4.12M | 0.01% |
+72,515
| New | +$3.64M |
|
973
PUT
Cencora
COR
$59.4B
| $4.12M | 0.01% |
409
+202
| +98% | +$18.6K |
|
|
XLRN
974
PUT
DELISTED
Acceleron Pharma
XLRN
| $4.12M | 0.01% |
432
-16
| -4% | -$1.54K |
|
975
CALL
TE Connectivity
TEL
$58B
| $4.11M | 0.01% |
504
+481
| +2,091% | +$36.2K |
|
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.