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 | |
|---|---|---|---|---|---|---|
3101
NNN REIT
NNN
$9.39B
| $427K | ﹤0.01% |
12,035
+10,650
| +769% | +$348K |
|
|
ACH
3102
CALL
Accendra Health
ACH
$240M
| $427K | ﹤0.01% |
561
-436
| -44% | -$3.19K |
|
3103
PUT
ProPetro Holding
PUMP
$1.45B
| $427K | ﹤0.01% |
832
+809
| +3,517% | +$3.73K |
|
3104
PUT
Amdocs
DOX
$5.53B
| $426K | ﹤0.01% |
70
+62
| +775% | +$3.83K |
|
|
EMBJ
3105
PUT
Embraer S.A. ADS
EMBJ
$11.6B
| $426K | ﹤0.01% |
713
-330
| -32% | -$2.04K |
|
3106
PUT
The Greenbrier Companies
GBX
$1.61B
| $425K | ﹤0.01% |
187
-219
| -54% | -$4.26K |
|
3107
PUT
Vertiv
VRT
$112B
| $425K | ﹤0.01% |
+314
| New | +$3.66K |
|
|
FIT
3108
PUT
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $425K | ﹤0.01% |
658
-538
| -45% | -$3.51K |
|
|
MOBL
3109
CALL
DELISTED
MobileIron, Inc.
MOBL
| $425K | ﹤0.01% |
863
+801
| +1,292% | +$3.67K |
|
|
VG
3110
PUT
DELISTED
Vonage Holdings Corporation
VG
| $425K | ﹤0.01% |
423
+135
| +47% | +$1.21K |
|
3111
CALL
Enovis
ENOV
$1.56B
| $424K | ﹤0.01% |
88
+86
| +4,300% | +$3.8K |
|
3112
Diamondback Energy
FANG
$57.6B
| $424K | ﹤0.01% |
10,155
+3,751
| +59% | +$153K |
|
3113
CALL
Merit Medical Systems
MMSI
$4.43B
| $424K | ﹤0.01% |
93
-29
| -24% | -$1.17K |
|
3114
CALL
OraSure Technologies
OSUR
$273M
| $424K | ﹤0.01% |
365
+291
| +393% | +$3.78K |
|
3115
UGI
UGI
$8B
| $424K | ﹤0.01% |
+13,344
| New | +$405K |
|
|
MDLA
3116
PUT
DELISTED
Medallia, Inc.
MDLA
| $424K | ﹤0.01% |
+168
| New | +$4.01K |
|
3117
PUT
Axcelis
ACLS
$4.12B
| $423K | ﹤0.01% |
152
+147
| +2,940% | +$3.58K |
|
3118
CALL
Equitable Holdings
EQH
$13.1B
| $422K | ﹤0.01% |
219
+172
| +366% | +$3.07K |
|
3119
Equinox Gold
EQX
$7.32B
| $422K | ﹤0.01% |
+37,650
| New | +$337K |
|
3120
CALL
Huntsman Corp
HUN
$2.24B
| $422K | ﹤0.01% |
235
-312
| -57% | -$5.24K |
|
3121
CALL
Laureate Education
LAUR
$5.18B
| $422K | ﹤0.01% |
+424
| New | +$4.1K |
|
|
MFA
3122
MFA Financial
MFA
$929M
| $422K | ﹤0.01% |
42,399
+37,722
| +807% | +$292K |
|
|
ECHO
3123
PUT
EchoStar
ECHO
$25.5B
| $422K | ﹤0.01% |
151
-51
| -25% | -$1.55K |
|
|
VRNT
3124
DELISTED
Verint Systems
VRNT
| $422K | ﹤0.01% |
18,368
-76,539
| -81% | -$1.7M |
|
|
CZR
3125
PUT
DELISTED
Caesars Entertainment Corporation
CZR
| $422K | ﹤0.01% |
348
-3,604
| -91% | -$36.4K |
|
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.