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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2051
PUT
Corpay
CPAY
$24.2B
| $1.17M | ﹤0.01% |
49
-229
| -82% | -$56.6K |
|
2052
PUT
OSI Systems
OSIS
$3.57B
| $1.16M | ﹤0.01% |
150
+40
| +36% | +$2.98K |
|
2053
CALL
TG Therapeutics
TGTX
$8.58B
| $1.16M | ﹤0.01% |
435
-1,236
| -74% | -$28.4K |
|
|
AJRD
2054
CALL
DELISTED
Aerojet Rocketdyne Holdings
AJRD
| $1.16M | ﹤0.01% |
292
+154
| +112% | +$6.23K |
|
2055
Accenture
ACN
$89.9B
| $1.16M | ﹤0.01% |
+5,150
| New | +$1.18M |
|
2056
PUT
TE Connectivity
TEL
$58.8B
| $1.16M | ﹤0.01% |
119
+65
| +120% | +$5.98K |
|
2057
Perrigo
PRGO
$1.4B
| $1.16M | ﹤0.01% |
25,267
+17,317
| +218% | +$907K |
|
2058
PUT
Nektar Therapeutics
NKTR
$2.39B
| $1.16M | ﹤0.01% |
46
-1
| -2% | -$315 |
|
2059
PUT
Owens Corning
OC
$11.5B
| $1.16M | ﹤0.01% |
168
-103
| -38% | -$6.6K |
|
2060
CBRE Group
CBRE
$40.8B
| $1.15M | ﹤0.01% |
24,537
+9,256
| +61% | +$422K |
|
2061
CALL
Cardiff Oncology
CRDF
$64.3M
| $1.15M | ﹤0.01% |
+812
| New | +$5.36K |
|
2062
CALL
Darling Ingredients
DAR
$9.93B
| $1.15M | ﹤0.01% |
320
-860
| -73% | -$26.3K |
|
2063
PUT
AllianceBernstein
AB
$3.47B
| $1.15M | ﹤0.01% |
426
-1,167
| -73% | -$32.7K |
|
2064
CALL
BJ's Restaurants
BJRI
$1.41B
| $1.15M | ﹤0.01% |
391
-190
| -33% | -$4.89K |
|
2065
M&T Bank
MTB
$36.2B
| $1.15M | ﹤0.01% |
+12,496
| New | +$1.28M |
|
2066
Sibanye-Stillwater
SBSW
$5.92B
| $1.15M | ﹤0.01% |
103,314
+21,265
| +26% | +$243K |
|
|
HOME
2067
CALL
DELISTED
At Home Group Inc.
HOME
| $1.15M | ﹤0.01% |
774
-94
| -11% | -$1.24K |
|
|
VISN
2068
CALL
Vistance Networks Inc
VISN
$2.66B
| $1.15M | ﹤0.01% |
1,277
+620
| +94% | +$5.84K |
|
2069
PUT
ING
ING
$93.8B
| $1.15M | ﹤0.01% |
1,623
+120
| +8% | +$917 |
|
2070
PUT
Seres Therapeutics
MCRB
$48M
| $1.15M | ﹤0.01% |
20
+18
| +900% | +$5.99K |
|
2071
PUT
Ovintiv
OVV
$17.5B
| $1.15M | ﹤0.01% |
1,410
+671
| +91% | +$6.92K |
|
2072
PUT
TC Energy
TRP
$73.5B
| $1.15M | ﹤0.01% |
273
+100
| +58% | +$4.58K |
|
2073
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $1.15M | ﹤0.01% |
75
-7
| -9% | -$1.08K |
|
2074
Franco-Nevada
FNV
$41.4B
| $1.15M | ﹤0.01% |
+8,206
| New | +$1.22M |
|
|
PPLI
2075
CALL
People Inc
PPLI
$3.1B
| $1.15M | ﹤0.01% |
227
-2,727
| -92% | -$187K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.