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 | |
|---|---|---|---|---|---|---|
1701
Fastly Inc
FSLY
$3.17B
| $1.6M | ﹤0.01% |
18,840
+8,866
| +89% | +$349K |
|
1702
PUT
Ionis Pharmaceuticals
IONS
$9.35B
| $1.6M | ﹤0.01% |
272
-453
| -62% | -$25.2K |
|
1703
PUT
Citizens Financial Group
CFG
$30.4B
| $1.6M | ﹤0.01% |
635
+190
| +43% | +$4.31K |
|
1704
CALL
NewMarket
NEU
$7.17B
| $1.6M | ﹤0.01% |
40
+4
| +11% | +$1.65K |
|
1705
US Foods
USFD
$21.4B
| $1.6M | ﹤0.01% |
81,195
+61,147
| +305% | +$1.17M |
|
1706
CALL
Trex
TREX
$4.51B
| $1.6M | ﹤0.01% |
246
+42
| +21% | +$2.24K |
|
1707
CALL
Bloomin' Brands
BLMN
$680M
| $1.6M | ﹤0.01% |
1,499
+1,144
| +322% | +$11.8K |
|
|
CTRA
1708
PUT
DELISTED
Coterra Energy
CTRA
| $1.6M | ﹤0.01% |
929
-1,063
| -53% | -$20.6K |
|
1709
CALL
IDEX
IEX
$16.5B
| $1.6M | ﹤0.01% |
101
+1
| +1% | +$153 |
|
1710
CALL
Enpro
NPO
$7.05B
| $1.6M | ﹤0.01% |
324
+323
| +32,300% | +$14.3K |
|
1711
PUT
SSR Mining
SSRM
$5.57B
| $1.59M | ﹤0.01% |
747
+412
| +123% | +$7.39K |
|
|
CEQP
1712
CALL
DELISTED
Crestwood Equity Partners LP
CEQP
| $1.59M | ﹤0.01% |
1,215
+832
| +217% | +$9.49K |
|
1713
PUT
Mattel
MAT
$4.17B
| $1.59M | ﹤0.01% |
1,646
-1,307
| -44% | -$11.9K |
|
1714
CALL
LivePerson
LPSN
$18.9M
| $1.59M | ﹤0.01% |
26
+17
| +189% | +$7.92K |
|
|
BERY
1715
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $1.59M | ﹤0.01% |
390
+175
| +81% | +$6.57K |
|
1716
PUT
Celldex Therapeutics
CLDX
$2.77B
| $1.58M | ﹤0.01% |
1,219
+1,008
| +478% | +$4.47K |
|
|
ONEM
1717
CALL
DELISTED
1Life Healthcare
ONEM
| $1.58M | ﹤0.01% |
+436
| New | +$12.3K |
|
1718
PUT
Invesco Aerospace & Defense ETF
PPA
$8.27B
| $1.58M | ﹤0.01% |
426
-617
| -59% | -$33.5K |
|
|
SBNY
1719
PUT
DELISTED
Signature Bank
SBNY
| $1.58M | ﹤0.01% |
148
+95
| +179% | +$9.35K |
|
|
CZR
1720
CALL
DELISTED
Caesars Entertainment Corporation
CZR
| $1.58M | ﹤0.01% |
1,301
+461
| +55% | +$4.66K |
|
1721
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$247M
| $1.58M | ﹤0.01% |
184,000
+168,372
| +1,077% | +$1.47M |
|
1722
PUT
Sabre
SABR
$656M
| $1.58M | ﹤0.01% |
1,957
+588
| +43% | +$4.17K |
|
1723
Enbridge
ENB
$124B
| $1.57M | ﹤0.01% |
+51,780
| New | +$1.59M |
|
1724
GE Aerospace
GE
$367B
| $1.57M | ﹤0.01% |
46,236
-25,172
| -35% | -$849K |
|
|
CLGX
1725
PUT
DELISTED
Corelogic, Inc.
CLGX
| $1.57M | ﹤0.01% |
234
+220
| +1,571% | +$9.78K |
|
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.