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 | |
|---|---|---|---|---|---|---|
1001
PUT
Everest Group
EG
$14.9B
| $2.94M | 0.01% |
153
| – | – |
|
1002
CALL
Etsy
ETSY
$7.68B
| $2.92M | 0.01% |
761
+180
| +31% | +$8.79K |
|
1003
PUT
BILL Holdings
BILL
$4.11B
| $2.92M | 0.01% |
+853
| New | +$40.4K |
|
1004
CALL
Enterprise Products Partners
EPD
$83.9B
| $2.9M | 0.01% |
2,028
-95
| -4% | -$2.21K |
|
|
AMED
1005
PUT
DELISTED
Amedisys
AMED
| $2.9M | 0.01% |
158
-128
| -45% | -$22.8K |
|
1006
PUT
Roper Technologies
ROP
$35.8B
| $2.9M | 0.01% |
93
-45
| -33% | -$15.9K |
|
1007
PUT
Alaska Air
ALK
$4.99B
| $2.9M | 0.01% |
1,017
+642
| +171% | +$34.9K |
|
1008
PUT
Universal Health Services
UHS
$9.16B
| $2.89M | 0.01% |
292
+240
| +462% | +$30.4K |
|
1009
PUT
Chubb
CB
$137B
| $2.89M | 0.01% |
259
+155
| +149% | +$22.2K |
|
1010
CALL
Innovative Industrial Properties
IIPR
$1.78B
| $2.88M | 0.01% |
380
-22
| -5% | -$1.86K |
|
1011
PUT
Ciena
CIEN
$57.7B
| $2.88M | 0.01% |
724
-689
| -49% | -$28.3K |
|
1012
Thermo Fisher Scientific
TMO
$213B
| $2.88M | 0.01% |
+10,152
| New | +$3.2M |
|
|
CRON
1013
PUT
Cronos Group
CRON
$1.02B
| $2.87M | 0.01% |
5,065
+2,512
| +98% | +$16.7K |
|
1014
PUT
Williams Companies
WMB
$92B
| $2.87M | 0.01% |
2,028
-600
| -23% | -$11.6K |
|
1015
CALL
Molson Coors Class B
TAP
$7.51B
| $2.86M | 0.01% |
733
+645
| +733% | +$32.7K |
|
1016
CALL
Alpha Pro Tech
APT
$50.2M
| $2.86M | 0.01% |
+2,365
| New | +$19.8K |
|
1017
PUT
Westlake Corp
WLK
$9.64B
| $2.85M | 0.01% |
748
+278
| +59% | +$15.6K |
|
1018
Northern Trust
NTRS
$21.9B
| $2.85M | 0.01% |
+37,804
| New | +$3.47M |
|
1019
CALL
Nutanix
NTNX
$14.2B
| $2.85M | 0.01% |
1,802
-153
| -8% | -$4.3K |
|
|
BNY
1020
CALL
Bank of New York Mellon
BNY
$109B
| $2.84M | 0.01% |
844
+467
| +124% | +$19.6K |
|
|
1021
CALL
Westlake Corp
WLK
$9.64B
| $2.84M | 0.01% |
743
-84
| -10% | -$4.72K |
|
1022
Digital Realty Trust
DLR
$66.4B
| $2.83M | 0.01% |
20,360
+20,104
| +7,853% | +$2.56M |
|
1023
GE Aerospace
GE
$362B
| $2.83M | 0.01% |
71,408
+37,164
| +109% | +$1.98M |
|
1024
PUT
Franco-Nevada
FNV
$41.3B
| $2.82M | 0.01% |
283
-36
| -11% | -$3.91K |
|
1025
CALL
IQVIA
IQV
$34.6B
| $2.81M | 0.01% |
261
+102
| +64% | +$14.6K |
|
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.