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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1626
CALL
AXIS Capital
AXS
$8.59B
| $1.33M | ﹤0.01% |
344
-49
| -12% | -$2.74K |
|
1627
PUT
Akamai
AKAM
$16.8B
| $1.33M | ﹤0.01% |
145
-250
| -63% | -$23.2K |
|
|
ESPR
1628
DELISTED
Esperion Therapeutics
ESPR
| $1.32M | ﹤0.01% |
42,052
+32,679
| +349% | +$1.72M |
|
1629
Arrowhead Research
ARWR
$12.1B
| $1.32M | ﹤0.01% |
45,984
+20,645
| +81% | +$833K |
|
1630
PUT
Hewlett Packard
HPE
$63.2B
| $1.32M | ﹤0.01% |
1,362
+1,157
| +564% | +$15.2K |
|
1631
CALL
PTC
PTC
$13.7B
| $1.32M | ﹤0.01% |
216
+15
| +7% | +$1.11K |
|
|
MOMO
1632
Hello Group
MOMO
$869M
| $1.32M | ﹤0.01% |
+60,945
| New | +$1.82M |
|
1633
PUT
British American Tobacco
BTI
$132B
| $1.32M | ﹤0.01% |
386
-102
| -21% | -$4.16K |
|
1634
ExxonMobil
XOM
$651B
| $1.32M | ﹤0.01% |
+34,749
| New | +$1.92M |
|
|
SEAC
1635
CALL
DELISTED
Seachange International Inc
SEAC
| $1.32M | ﹤0.01% |
177
+153
| +638% | +$11.7K |
|
1636
CALL
Broadridge
BR
$17.2B
| $1.32M | ﹤0.01% |
139
+103
| +286% | +$11.8K |
|
1637
CALL
Boston Properties
BXP
$11B
| $1.32M | ﹤0.01% |
143
+13
| +10% | +$1.67K |
|
|
FTSV
1638
DELISTED
Forty Seven, Inc. Common Stock
FTSV
| $1.31M | ﹤0.01% |
13,769
+13,146
| +2,110% | +$795K |
|
1639
CALL
Hershey
HSY
$35.4B
| $1.31M | ﹤0.01% |
99
-57
| -37% | -$8.41K |
|
1640
Enphase Energy
ENPH
$4.84B
| $1.31M | ﹤0.01% |
40,502
+25,581
| +171% | +$964K |
|
1641
Vodafone
VOD
$34.9B
| $1.31M | ﹤0.01% |
+94,948
| New | +$1.7M |
|
1642
Acuity Brands
AYI
$9.88B
| $1.3M | ﹤0.01% |
15,220
+13,499
| +784% | +$1.48M |
|
1643
CALL
D.R. Horton
DHI
$41.2B
| $1.3M | ﹤0.01% |
383
-1,373
| -78% | -$71.3K |
|
1644
PUT
Dave & Buster's
PLAY
$343M
| $1.3M | ﹤0.01% |
996
+749
| +303% | +$25.7K |
|
1645
PUT
IPG Photonics
IPGP
$3.89B
| $1.3M | ﹤0.01% |
118
-483
| -80% | -$63.2K |
|
1646
Analog Devices
ADI
$181B
| $1.3M | ﹤0.01% |
14,508
-25,652
| -64% | -$2.8M |
|
1647
CALL
Fate Therapeutics
FATE
$281M
| $1.3M | ﹤0.01% |
585
-179
| -23% | -$4.53K |
|
1648
CALL
Sempra
SRE
$60.8B
| $1.3M | ﹤0.01% |
230
+108
| +89% | +$7.66K |
|
1649
PUT
HealthEquity
HQY
$7.91B
| $1.29M | ﹤0.01% |
256
+153
| +149% | +$10.2K |
|
1650
AllianceBernstein
AB
$3.47B
| $1.29M | ﹤0.01% |
69,630
+67,100
| +2,652% | +$1.98M |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.