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 | |
|---|---|---|---|---|---|---|
976
CALL
RPM International
RPM
$13.4B
| $4.11M | 0.01% |
547
+366
| +202% | +$25.4K |
|
|
ZEN
977
CALL
DELISTED
ZENDESK INC
ZEN
| $4.1M | 0.01% |
463
+220
| +91% | +$16.9K |
|
978
PUT
Synchrony
SYF
$23.3B
| $4.1M | 0.01% |
1,849
+1,390
| +303% | +$27.1K |
|
979
CALL
Qorvo
QRVO
$7.65B
| $4.09M | 0.01% |
370
-178
| -32% | -$17.6K |
|
980
Ross Stores
ROST
$74.5B
| $4.08M | 0.01% |
47,869
+22,135
| +86% | +$2.01M |
|
|
SKX
981
CALL
DELISTED
Skechers
SKX
| $4.08M | 0.01% |
1,299
+168
| +15% | +$4.82K |
|
982
PUT
Regency Centers
REG
$14.9B
| $4.07M | 0.01% |
886
+394
| +80% | +$16.6K |
|
983
PUT
Trex
TREX
$4.4B
| $4.06M | 0.01% |
624
-32
| -5% | -$1.71K |
|
984
CALL
Oneok
OKE
$58.7B
| $4.05M | 0.01% |
1,218
+505
| +71% | +$16.5K |
|
985
CALL
APA Corp
APA
$12.9B
| $4.04M | 0.01% |
2,996
+503
| +20% | +$5.74K |
|
986
PUT
Hasbro
HAS
$12.4B
| $4.04M | 0.01% |
539
+305
| +130% | +$22.1K |
|
987
Medtronic
MDT
$105B
| $4.04M | 0.01% |
44,023
+22,172
| +101% | +$2.13M |
|
988
TransDigm Group
TDG
$67.9B
| $4.03M | 0.01% |
+9,127
| New | +$3.45M |
|
989
CALL
Credit Acceptance
CACC
$6.2B
| $4.02M | 0.01% |
96
-4
| -4% | -$1.39K |
|
990
CALL
Zoetis
ZTS
$31.3B
| $4.01M | 0.01% |
293
-282
| -49% | -$36.8K |
|
|
991
Apple
AAPL
$4.72T
| $4.01M | 0.01% |
44,000
-720,820
| -94% | -$55.9M |
|
992
McDonald's
MCD
$187B
| $4M | 0.01% |
21,667
-15,157
| -41% | -$2.78M |
|
993
CALL
STMicroelectronics
STM
$47.7B
| $3.99M | 0.01% |
1,456
+175
| +14% | +$4.35K |
|
994
Microchip Technology
MCHP
$44.2B
| $3.98M | 0.01% |
75,672
-3,220
| -4% | -$145K |
|
995
PUT
Diamondback Energy
FANG
$57.8B
| $3.98M | 0.01% |
952
+105
| +12% | +$4.29K |
|
996
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$259M
| $3.98M | 0.01% |
535
+490
| +1,089% | +$16.5K |
|
997
CALL
Welltower
WELL
$174B
| $3.97M | 0.01% |
768
+467
| +155% | +$23K |
|
998
PUT
Thor Industries
THO
$3.9B
| $3.97M | 0.01% |
373
+131
| +54% | +$10.3K |
|
|
TECD
999
CALL
DELISTED
Tech Data Corp
TECD
| $3.97M | 0.01% |
274
+95
| +53% | +$13.1K |
|
1000
PUT
Virgin Galactic
SPCE
$332M
| $3.96M | 0.01% |
121
-150
| -55% | -$49.3K |
|
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.