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Simplex Trading

Simplex Trading Portfolio holdings

AUM $171B
1-Year Est. Return 85%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+33.36%
1 Year Est. Return
+85%
3 Year Est. Return
+183.25%
5 Year Est. Return
+145.21%
10 Year Est. Return
+1,056.84%
AUM
$62.7B
AUM Growth
+$5.97B
Cap. Flow
+$178M
Cap. Flow %
0.28%
Top 10 Hldgs %
44.28%
Holding
8,917
New
1,291
Increased
3,426
Reduced
2,723
Closed
1,278

Top Buys

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$77.3M
2
GLD icon
SPDR Gold Trust
GLD
+$73.2M
3
EFA icon
iShares MSCI EAFE ETF
EFA
+$38.5M
4
NFLX icon
Netflix
NFLX
+$38.4M
5
NVDA icon
NVIDIA
NVDA
+$36.3M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$55.9M
2
VXX icon
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
+$28.3M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$23.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$23.1M
5
ADBE icon
Adobe
ADBE
+$22M

Sector Composition

Rank Sector Weight
1 Miscellaneous 97.74%
2 Technology 0.49%
3 Consumer Discretionary 0.48%
4 Communication Services 0.35%
5 Healthcare 0.27%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RH icon
8226
RH
RH
$2.8B
– –
-2,577
Closed -$467K
RIGL icon
8227
Rigel Pharmaceuticals
RIGL
$909M
– –
-330
Closed -$5.94K
RIOT icon
8228
CALL
Riot Platforms
RIOT
$8.18B
– –
-677
Closed -$56K
RIOT icon
8229
Riot Platforms
RIOT
$8.18B
– –
-7,294
Closed -$13K
RIOT icon
8230
PUT
Riot Platforms
RIOT
$8.18B
– –
-410
Closed -$34K
RLGT icon
8231
Radiant Logistics
RLGT
$395M
– –
-1,842
Closed -$7.11K
RLGT icon
8232
PUT
Radiant Logistics
RLGT
$395M
– –
-20
Closed -$7K
RLI icon
8233
RLI Corp
RLI
$5.73B
– –
-124
Closed -$5K
RLI icon
8234
PUT
RLI Corp
RLI
$5.73B
– –
-2
Closed -$8K
RLJ icon
8235
RLJ Lodging Trust
RLJ
$1.67B
– –
-9,134
Closed -$85.4K
RNG icon
8236
CALL
RingCentral
RNG
$6.13B
– –
-389
Closed -$8.24M
RNG icon
8237
RingCentral
RNG
$6.13B
$0 ﹤0.01%
11,604
+260
+2% +$65.8K
RNG icon
8238
PUT
RingCentral
RNG
$6.13B
– –
-472
Closed -$10M
ROCK icon
8239
PUT
Gibraltar Industries
ROCK
$1.4B
– –
-15
Closed -$64K
ROG icon
8240
Rogers Corp
ROG
$2.28B
– –
-1,067
Closed -$114K
ROL icon
8241
Rollins
ROL
$17.3B
– –
-3,548
Closed -$95K
ROP icon
8242
Roper Technologies
ROP
$40.3B
– –
-1,680
Closed -$602K
RPD icon
8243
Rapid7
RPD
$741M
– –
-6,577
Closed -$306K
RRGB icon
8244
Red Robin
RRGB
$160M
– –
-5,246
Closed -$66.1K
RS icon
8245
Reliance Steel & Aluminium
RS
$20.4B
– –
-891
Closed -$81.3K
RSP icon
8246
Invesco S&P 500 Equal Weight ETF
RSP
$100B
– –
-1,626
Closed -$136K
RTX icon
8247
RTX Corp
RTX
$271B
– –
-52,049
Closed -$3.25M
RTH icon
8248
VanEck Retail ETF
RTH
$248M
– –
-310
Closed -$32K
RUN icon
8249
Sunrun
RUN
$2.14B
– –
-11,286
Closed -$173K
RYZ
8250
CALL
Ryerson Holding Corp
RYZ
$1.37B
– –
-2
Closed -$1K
328 329
330
331 332

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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 1,291 new, 3,426 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 Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.

  • 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 1,291 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.