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 | |
|---|---|---|---|---|---|---|
2026
PUT
Gildan
GIL
$9.25B
| $852K | ﹤0.01% |
668
+641
| +2,374% | +$15.5K |
|
2027
PUT
Inseego
INSG
$108M
| $852K | ﹤0.01% |
137
+98
| +251% | +$7.07K |
|
2028
PUT
Invitation Homes
INVH
$17.7B
| $852K | ﹤0.01% |
399
+51
| +15% | +$1.44K |
|
2029
Baxter International
BAX
$11.6B
| $851K | ﹤0.01% |
10,485
+9,885
| +1,648% | +$853K |
|
2030
PUT
Fox Class B
FOX
$20.7B
| $849K | ﹤0.01% |
360
-188
| -34% | -$6.08K |
|
2031
HubSpot
HUBS
$10.5B
| $849K | ﹤0.01% |
6,380
+4,739
| +289% | +$787K |
|
2032
PUT
LyondellBasell Industries
LYB
$19.5B
| $848K | ﹤0.01% |
171
-536
| -76% | -$39.4K |
|
|
BPMC
2033
PUT
DELISTED
Blueprint Medicines
BPMC
| $847K | ﹤0.01% |
145
-12
| -8% | -$772 |
|
2034
SouthState Bank Corp
SSB
$10.3B
| $846K | ﹤0.01% |
+14,414
| New | +$1.07M |
|
2035
CALL
Magna International
MGA
$17.9B
| $845K | ﹤0.01% |
265
-109
| -29% | -$5.03K |
|
|
ITCI
2036
PUT
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $843K | ﹤0.01% |
549
-4,145
| -88% | -$90K |
|
|
WPX
2037
PUT
DELISTED
WPX Energy, Inc.
WPX
| $842K | ﹤0.01% |
2,763
+2,450
| +783% | +$23.1K |
|
|
2038
CALL
Fox Class B
FOX
$20.7B
| $841K | ﹤0.01% |
357
-73
| -17% | -$2.36K |
|
2039
CALL
Sensata Technologies
ST
$6.65B
| $841K | ﹤0.01% |
291
+259
| +809% | +$11.2K |
|
2040
Albemarle
ALB
$13.5B
| $839K | ﹤0.01% |
+14,899
| New | +$1.14M |
|
2041
PUT
Knight Transportation
KNX
$11.8B
| $839K | ﹤0.01% |
256
-744
| -74% | -$26.3K |
|
2042
CALL
Thor Industries
THO
$3.99B
| $839K | ﹤0.01% |
199
-89
| -31% | -$6.18K |
|
2043
PUT
Avnet
AVT
$7.33B
| $838K | ﹤0.01% |
334
+278
| +496% | +$9.47K |
|
2044
CALL
Delek US
DK
$3.87B
| $838K | ﹤0.01% |
532
+465
| +694% | +$11K |
|
2045
CALL
VF Corp
VFC
$6.68B
| $838K | ﹤0.01% |
157
-28
| -15% | -$2.18K |
|
2046
PUT
Citizens Financial Group
CFG
$30.4B
| $837K | ﹤0.01% |
445
-89
| -17% | -$2.9K |
|
2047
Baker Hughes
BKR
$56.8B
| $835K | ﹤0.01% |
79,558
+45,136
| +131% | +$848K |
|
|
MNDT
2048
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $835K | ﹤0.01% |
78,965
+66,768
| +547% | +$960K |
|
2049
Molina Healthcare
MOH
$10.3B
| $834K | ﹤0.01% |
+5,973
| New | +$799K |
|
2050
PUT
Banco Bilbao Vizcaya Argentaria
BBVA
$144B
| $831K | ﹤0.01% |
2,718
-1,522
| -36% | -$7.24K |
|
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.