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 | |
|---|---|---|---|---|---|---|
|
AXON
1601
CALL
Axon Enterprise
AXON
$40.5B
| $1.37M | ﹤0.01% |
194
+15
| +8% | +$1.12K |
|
|
FRC
1602
CALL
DELISTED
First Republic Bank
FRC
| $1.36M | ﹤0.01% |
166
+134
| +419% | +$14.2K |
|
1603
Cloudflare
NET
$93B
| $1.36M | ﹤0.01% |
58,099
+39,999
| +221% | +$778K |
|
1604
PUT
PTC
PTC
$13.7B
| $1.36M | ﹤0.01% |
223
+210
| +1,615% | +$15.6K |
|
1605
Elanco Animal Health
ELAN
$12.4B
| $1.36M | ﹤0.01% |
+60,809
| New | +$1.67M |
|
1606
PUT
Sony
SONY
$123B
| $1.36M | ﹤0.01% |
1,150
+455
| +65% | +$5.96K |
|
1607
Labcorp
LH
$24.3B
| $1.36M | ﹤0.01% |
+12,512
| New | +$1.8M |
|
1608
PUT
Wabtec
WAB
$51.1B
| $1.36M | ﹤0.01% |
282
+106
| +60% | +$7.28K |
|
1609
Invesco CurrencyShares Canadian Dollar Trust
FXC
$69.2M
| $1.35M | ﹤0.01% |
19,342
+14,785
| +324% | +$1.09M |
|
1610
iShares MSCI India ETF
INDA
$6.71B
| $1.35M | ﹤0.01% |
56,191
+38,604
| +220% | +$1.23M |
|
|
UNIT
1611
CALL
Uniti Group
UNIT
$2.63B
| $1.35M | ﹤0.01% |
2,241
-103
| -4% | -$808 |
|
1612
Zscaler
ZS
$23B
| $1.35M | ﹤0.01% |
22,190
-7,475
| -25% | -$411K |
|
1613
PUT
Nektar Therapeutics
NKTR
$2.39B
| $1.35M | ﹤0.01% |
50
-23
| -32% | -$7.11K |
|
1614
PUT
Parker-Hannifin
PH
$125B
| $1.35M | ﹤0.01% |
104
-8
| -7% | -$1.45K |
|
|
PMT
1615
CALL
PennyMac Mortgage Investment
PMT
$849M
| $1.35M | ﹤0.01% |
1,271
+1,032
| +432% | +$20.4K |
|
1616
CALL
CRISPR Therapeutics
CRSP
$4.58B
| $1.35M | ﹤0.01% |
318
+10
| +3% | +$516 |
|
1617
PUT
FirstEnergy
FE
$28.9B
| $1.34M | ﹤0.01% |
334
+68
| +26% | +$3.16K |
|
1618
Cardinal Health
CAH
$53.4B
| $1.34M | ﹤0.01% |
27,908
+24,132
| +639% | +$1.25M |
|
1619
CALL
Charles River Laboratories
CRL
$10.9B
| $1.34M | ﹤0.01% |
106
-13
| -11% | -$1.95K |
|
1620
CALL
DraftKings
DKNG
$11.4B
| $1.34M | ﹤0.01% |
+1,083
| New | +$15.5K |
|
1621
Kinder Morgan
KMI
$73.1B
| $1.34M | ﹤0.01% |
96,047
-79,815
| -45% | -$1.52M |
|
1622
PUT
Enbridge
ENB
$124B
| $1.33M | ﹤0.01% |
459
+221
| +93% | +$8.19K |
|
1623
PUT
Delek US
DK
$3.87B
| $1.33M | ﹤0.01% |
846
+750
| +781% | +$17.8K |
|
|
AAWW
1624
CALL
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $1.33M | ﹤0.01% |
519
+250
| +93% | +$6.25K |
|
|
IPHI
1625
PUT
DELISTED
INPHI CORPORATION
IPHI
| $1.33M | ﹤0.01% |
168
-45
| -21% | -$3.5K |
|
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.