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 | |
|---|---|---|---|---|---|---|
2201
PUT
Digital Turbine
APPS
$1.02B
| $940K | ﹤0.01% |
748
+107
| +17% | +$747 |
|
2202
CALL
Monro
MNRO
$525M
| $939K | ﹤0.01% |
171
+167
| +4,175% | +$8.89K |
|
|
HMSY
2203
CALL
DELISTED
HMS Holdings Corp.
HMSY
| $939K | ﹤0.01% |
290
+257
| +779% | +$7.44K |
|
|
SRG
2204
CALL
Seritage Growth Properties
SRG
$130M
| $938K | ﹤0.01% |
823
+726
| +748% | +$7.3K |
|
2205
CALL
AudioCodes
AUDC
$244M
| $937K | ﹤0.01% |
295
-479
| -62% | -$14.7K |
|
2206
PUT
Cytokinetics
CYTK
$11B
| $935K | ﹤0.01% |
397
-218
| -35% | -$4.09K |
|
2207
CALL
National Grid
NGG
$82.7B
| $935K | ﹤0.01% |
174
-114
| -40% | -$5.78K |
|
|
COR
2208
CALL
DELISTED
Coresite Realty Corporation
COR
| $932K | ﹤0.01% |
77
+42
| +120% | +$5.05K |
|
|
MITT
2209
CALL
TPG Mortgage Investment Trust
MITT
$230M
| $928K | ﹤0.01% |
970
+913
| +1,602% | +$8.72K |
|
2210
Tower Semiconductor
TSEM
$26.4B
| $928K | ﹤0.01% |
+48,652
| New | +$931K |
|
|
HDS
2211
CALL
DELISTED
HD Supply Holdings, Inc.
HDS
| $928K | ﹤0.01% |
268
+267
| +26,700% | +$8.28K |
|
|
HTZ
2212
CALL
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $928K | ﹤0.01% |
6,587
+5,896
| +853% | +$18.7K |
|
2213
PUT
Sunrun
RUN
$2.37B
| $926K | ﹤0.01% |
470
-572
| -55% | -$8.76K |
|
|
SRG
2214
PUT
Seritage Growth Properties
SRG
$130M
| $926K | ﹤0.01% |
813
+323
| +66% | +$3.25K |
|
2215
Weibo
WB
$1.9B
| $926K | ﹤0.01% |
27,583
-15,312
| -36% | -$525K |
|
|
WRK
2216
CALL
DELISTED
WestRock Company
WRK
| $926K | ﹤0.01% |
328
-284
| -46% | -$8.07K |
|
|
RVNC
2217
CALL
DELISTED
Revance Therapeutics, Inc.
RVNC
| $925K | ﹤0.01% |
379
+2
| +0.5% | +$39 |
|
2218
CALL
Tenable Holdings
TENB
$3.56B
| $924K | ﹤0.01% |
310
+242
| +356% | +$6.58K |
|
2219
PUT
RenaissanceRe
RNR
$13.7B
| $923K | ﹤0.01% |
54
-46
| -46% | -$7.55K |
|
2220
CALL
Steris
STE
$20.9B
| $920K | ﹤0.01% |
60
+36
| +150% | +$5.48K |
|
2221
CALL
Eastman Chemical
EMN
$7.8B
| $919K | ﹤0.01% |
132
+27
| +26% | +$1.7K |
|
2222
PVH
PVH
$3.71B
| $919K | ﹤0.01% |
19,131
+12,121
| +173% | +$565K |
|
|
TWOU
2223
CALL
DELISTED
2U Inc
TWOU
| $918K | ﹤0.01% |
8
+2
| +33% | +$1.79K |
|
2224
PUT
First Majestic Silver
AG
$8.05B
| $916K | ﹤0.01% |
921
+101
| +12% | +$856 |
|
2225
CALL
Yext
YEXT
$501M
| $916K | ﹤0.01% |
552
+318
| +136% | +$4.46K |
|
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.