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 | |
|---|---|---|---|---|---|---|
1501
Direxion Daily S&P Oil & Gas Exp. & Prod. Bear 2X ETF
DRIP
$103M
| $2M | ﹤0.01% |
372
-76
| -17% | -$645K |
|
1502
CALL
Cerence
CRNC
$382M
| $2M | ﹤0.01% |
490
+323
| +193% | +$9.28K |
|
|
NLSN
1503
CALL
DELISTED
Nielsen Holdings plc
NLSN
| $2M | ﹤0.01% |
1,347
+93
| +7% | +$1.3K |
|
1504
Fortinet
FTNT
$112B
| $2M | ﹤0.01% |
72,875
+29,035
| +66% | +$729K |
|
1505
CALL
nVent Electric
NVT
$24.5B
| $2M | ﹤0.01% |
1,067
+64
| +6% | +$1.17K |
|
|
PLAN
1506
DELISTED
Anaplan, Inc.
PLAN
| $1.99M | ﹤0.01% |
44,018
+15,597
| +55% | +$653K |
|
1507
PUT
Pluri
PLUR
$19.2M
| $1.99M | ﹤0.01% |
282
+269
| +2,069% | +$17.6K |
|
1508
ProShares UltraPro Dow 30
UDOW
$849M
| $1.99M | ﹤0.01% |
126,808
-29,236
| -19% | -$413K |
|
1509
PUT
Tandem Diabetes Care
TNDM
$1.17B
| $1.99M | ﹤0.01% |
201
-101
| -33% | -$8.06K |
|
1510
PUT
Check Point Software Technologies
CHKP
$13.3B
| $1.99M | ﹤0.01% |
185
-796
| -81% | -$84.3K |
|
1511
Qorvo
QRVO
$7.63B
| $1.99M | ﹤0.01% |
17,984
-24,811
| -58% | -$2.46M |
|
|
MMP
1512
PUT
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $1.99M | ﹤0.01% |
460
-85
| -16% | -$3.59K |
|
1513
CALL
Masco
MAS
$16B
| $1.98M | ﹤0.01% |
395
+240
| +155% | +$10.4K |
|
1514
Eversource Energy
ES
$28.2B
| $1.98M | ﹤0.01% |
23,813
+8,674
| +57% | +$718K |
|
1515
CALL
Church & Dwight Co
CHD
$23.1B
| $1.98M | ﹤0.01% |
256
+130
| +103% | +$9.46K |
|
|
APHA
1516
PUT
DELISTED
Aphria Inc. Common Shares
APHA
| $1.98M | ﹤0.01% |
4,613
+2,970
| +181% | +$11.4K |
|
|
FTCH
1517
CALL
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $1.97M | ﹤0.01% |
1,140
+143
| +14% | +$1.94K |
|
1518
PUT
Assurant
AIZ
$13.7B
| $1.96M | ﹤0.01% |
190
+73
| +62% | +$7.56K |
|
1519
CALL
Boyd Gaming
BYD
$6.47B
| $1.96M | ﹤0.01% |
937
+243
| +35% | +$4.43K |
|
1520
CALL
Illinois Tool Works
ITW
$81.4B
| $1.96M | ﹤0.01% |
112
-301
| -73% | -$49.2K |
|
1521
CALL
KB Home
KBH
$3.48B
| $1.96M | ﹤0.01% |
638
-215
| -25% | -$5.92K |
|
1522
CALL
ProShares UltraShort Industrials
SIJ
$5.74M
| $1.95M | ﹤0.01% |
85
+24
| +39% | +$4.3K |
|
1523
PUT
Fastenal
FAST
$54B
| $1.95M | ﹤0.01% |
910
+290
| +47% | +$5.54K |
|
|
AZUL
1524
CALL
DELISTED
Azul
AZUL
| $1.95M | ﹤0.01% |
1,741
+1,690
| +3,314% | +$16.3K |
|
|
AYX
1525
DELISTED
Alteryx Inc
AYX
| $1.94M | ﹤0.01% |
11,823
+4,137
| +54% | +$536K |
|
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.