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 | |
|---|---|---|---|---|---|---|
1901
QuidelOrtho
QDEL
$1.09B
| $1.29M | ﹤0.01% |
5,769
-9,816
| -63% | -$1.54M |
|
1902
PUT
BlackBerry
BB
$5.01B
| $1.29M | ﹤0.01% |
2,634
+14
| +0.5% | +$63 |
|
|
MAG
1903
CALL
DELISTED
MAG Silver
MAG
| $1.29M | ﹤0.01% |
914
-147
| -14% | -$1.69K |
|
|
CNH
1904
PUT
CNH Industrial
CNH
$13.8B
| $1.29M | ﹤0.01% |
2,105
+2,071
| +6,091% | +$11.5K |
|
1905
CALL
Principal Financial Group
PFG
$23.6B
| $1.28M | ﹤0.01% |
309
+270
| +692% | +$9.85K |
|
1906
PUT
Madison Square Garden
MSGS
$9.54B
| $1.28M | ﹤0.01% |
77
-142
| -65% | -$23.5K |
|
1907
PUT
NCR Voyix
VYX
$1.06B
| $1.28M | ﹤0.01% |
1,206
+1,180
| +4,538% | +$13.5K |
|
1908
PUT
America Movil
AMX
$78.1B
| $1.28M | ﹤0.01% |
1,007
+604
| +150% | +$7.55K |
|
1909
PUT
ZTO Express
ZTO
$18.2B
| $1.28M | ﹤0.01% |
348
-100
| -22% | -$3.19K |
|
|
KSU
1910
DELISTED
Kansas City Southern
KSU
| $1.28M | ﹤0.01% |
8,560
+7,996
| +1,418% | +$1.12M |
|
1911
CALL
Deckers Outdoor
DECK
$13.3B
| $1.28M | ﹤0.01% |
390
-582
| -60% | -$16K |
|
1912
PUT
Pinnacle West Capital
PNW
$12.9B
| $1.27M | ﹤0.01% |
174
+166
| +2,075% | +$12.5K |
|
1913
PUT
Sibanye-Stillwater
SBSW
$5.92B
| $1.27M | ﹤0.01% |
1,473
+548
| +59% | +$4.17K |
|
1914
National Healthcare
NHC
$3.53B
| $1.27M | ﹤0.01% |
20,081
-397
| -2% | -$26.6K |
|
1915
CALL
Aramark
ARMK
$15B
| $1.27M | ﹤0.01% |
781
+123
| +19% | +$2.16K |
|
1916
PUT
Box
BOX
$4.02B
| $1.27M | ﹤0.01% |
613
+533
| +666% | +$9.36K |
|
1917
CALL
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $1.27M | ﹤0.01% |
145
-13
| -8% | -$1.15K |
|
1918
PUT
Global Payments
GPN
$22.1B
| $1.27M | ﹤0.01% |
75
-323
| -81% | -$53.8K |
|
1919
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $1.27M | ﹤0.01% |
+3,908
| New | +$1.19M |
|
|
LSI
1920
DELISTED
Life Storage, Inc.
LSI
| $1.27M | ﹤0.01% |
20,028
-28,769
| -59% | -$1.78M |
|
1921
PUT
Wolfspeed
WOLF
$1.2B
| $1.27M | ﹤0.01% |
214
-96
| -31% | -$4.62K |
|
1922
CALL
Fortune Brands Innovations
FBIN
$6.12B
| $1.26M | ﹤0.01% |
232
-63
| -21% | -$2.93K |
|
|
CCXI
1923
DELISTED
ChemoCentryx, Inc.
CCXI
| $1.26M | ﹤0.01% |
21,997
+13,476
| +158% | +$733K |
|
|
DISCK
1924
CALL
DELISTED
Discovery, Inc. Series C Common Stock
DISCK
| $1.26M | ﹤0.01% |
628
+282
| +82% | +$5.52K |
|
1925
CALL
NetApp
NTAP
$32.9B
| $1.26M | ﹤0.01% |
284
-18
| -6% | -$773 |
|
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.