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 | |
|---|---|---|---|---|---|---|
1726
CALL
NRG Energy
NRG
$29.8B
| $1.19M | ﹤0.01% |
435
-54
| -11% | -$1.86K |
|
1727
Eversource Energy
ES
$28.2B
| $1.18M | ﹤0.01% |
15,139
+8,994
| +146% | +$789K |
|
|
SAVE
1728
CALL
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.18M | ﹤0.01% |
919
+705
| +329% | +$22.7K |
|
1729
CALL
Cloudflare
NET
$93B
| $1.18M | ﹤0.01% |
503
+327
| +186% | +$6.36K |
|
1730
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $1.18M | ﹤0.01% |
128
+42
| +49% | +$4.37K |
|
|
KYNB
1731
Kyntra Bio
KYNB
$28.5M
| $1.18M | ﹤0.01% |
1,358
-759
| -36% | -$754K |
|
1732
EOG Resources
EOG
$78B
| $1.17M | ﹤0.01% |
+32,640
| New | +$2.12M |
|
|
MPT
1733
PUT
Medical Properties Trust
MPT
$2.89B
| $1.17M | ﹤0.01% |
677
+461
| +213% | +$9.64K |
|
1734
CALL
Dave & Buster's
PLAY
$343M
| $1.17M | ﹤0.01% |
895
+824
| +1,161% | +$28.2K |
|
|
HBI
1735
CALL
DELISTED
Hanesbrands
HBI
| $1.17M | ﹤0.01% |
1,485
+4
| +0.3% | +$51 |
|
1736
PUT
BioXcel Therapeutics
BTAI
$26.2M
| $1.16M | ﹤0.01% |
+33
| New | +$11.9K |
|
1737
CALL
Canadian National Railway
CNI
$78.5B
| $1.16M | ﹤0.01% |
150
+39
| +35% | +$3.4K |
|
1738
PUT
Canadian Solar
CSIQ
$906M
| $1.16M | ﹤0.01% |
732
-1,431
| -66% | -$29K |
|
1739
CALL
Hartford Financial Services
HIG
$38.5B
| $1.16M | ﹤0.01% |
330
-610
| -65% | -$31.8K |
|
1740
PUT
Itron
ITRI
$3.73B
| $1.16M | ﹤0.01% |
208
-8
| -4% | -$608 |
|
1741
PUT
Virtu Financial
VIRT
$5.2B
| $1.16M | ﹤0.01% |
558
+406
| +267% | +$7.5K |
|
1742
Aptiv
APTV
$12B
| $1.16M | ﹤0.01% |
23,573
+16,333
| +226% | +$1.28M |
|
1743
Teradata
TDC
$2.68B
| $1.16M | ﹤0.01% |
56,495
-547
| -1% | -$12.6K |
|
1744
Moody's
MCO
$82.4B
| $1.15M | ﹤0.01% |
+5,456
| New | +$1.33M |
|
1745
CALL
Tandem Diabetes Care
TNDM
$1.17B
| $1.15M | ﹤0.01% |
179
-187
| -51% | -$13.1K |
|
1746
CALL
Trip.com Group
TCOM
$27.5B
| $1.15M | ﹤0.01% |
490
-755
| -61% | -$23.5K |
|
1747
CALL
Weyerhaeuser
WY
$17.3B
| $1.15M | ﹤0.01% |
678
+165
| +32% | +$4.34K |
|
1748
CALL
Alcoa
AA
$11.7B
| $1.15M | ﹤0.01% |
1,859
+500
| +37% | +$6.86K |
|
1749
Logitech
LOGI
$15.2B
| $1.14M | ﹤0.01% |
+26,662
| New | +$1.15M |
|
|
MMP
1750
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $1.14M | ﹤0.01% |
31,276
+1,818
| +6% | +$97.6K |
|
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.