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 | |
|---|---|---|---|---|---|---|
1701
Energy Transfer Partners
ET
$70.1B
| $1.22M | ﹤0.01% |
264,648
+195,185
| +281% | +$2.08M |
|
1702
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
$16.3B
| $1.22M | ﹤0.01% |
+15,800
| New | +$1.33M |
|
|
BLUE
1703
DELISTED
bluebird bio
BLUE
| $1.21M | ﹤0.01% |
2,036
+59
| +3% | +$57.5K |
|
1704
PUT
Fate Therapeutics
FATE
$281M
| $1.21M | ﹤0.01% |
546
-502
| -48% | -$12.7K |
|
1705
PUT
Oneok
OKE
$58.7B
| $1.21M | ﹤0.01% |
556
-200
| -26% | -$12.2K |
|
1706
PUT
Expeditors International
EXPD
$22.9B
| $1.21M | ﹤0.01% |
181
+126
| +229% | +$8.99K |
|
1707
PUT
Abercrombie & Fitch
ANF
$4.17B
| $1.21M | ﹤0.01% |
1,326
+310
| +31% | +$4.49K |
|
1708
PUT
Viasat
VSAT
$9.79B
| $1.2M | ﹤0.01% |
335
-240
| -42% | -$13.8K |
|
1709
ProShares UltraShort Bloomberg Crude Oil
SCO
$585M
| $1.2M | ﹤0.01% |
301
+235
| +356% | +$419K |
|
1710
PUT
WEX
WEX
$6.11B
| $1.2M | ﹤0.01% |
115
-59
| -34% | -$11K |
|
1711
Allison Transmission
ALSN
$10.1B
| $1.2M | ﹤0.01% |
+36,845
| New | +$1.54M |
|
1712
CALL
Generac Holdings
GNRC
$11.9B
| $1.2M | ﹤0.01% |
129
-172
| -57% | -$17.7K |
|
1713
PUT
Molson Coors Class B
TAP
$7.68B
| $1.2M | ﹤0.01% |
308
-150
| -33% | -$7.6K |
|
|
CATM
1714
DELISTED
Cardtronics plc Class A Ordinary Shares (UK)
CATM
| $1.2M | ﹤0.01% |
57,380
+28,470
| +98% | +$1.07M |
|
1715
Bath & Body Works
BBWI
$4.01B
| $1.2M | ﹤0.01% |
128,363
+74,007
| +136% | +$1.17M |
|
1716
PUT
Toyota
TM
$210B
| $1.2M | ﹤0.01% |
100
-192
| -66% | -$25.6K |
|
1717
PUT
Brighthouse Financial
BHF
$3.63B
| $1.2M | ﹤0.01% |
496
+176
| +55% | +$6.23K |
|
1718
Middleby
MIDD
$6.05B
| $1.2M | ﹤0.01% |
21,062
+20,362
| +2,909% | +$2M |
|
|
XEC
1719
PUT
DELISTED
CIMAREX ENERGY CO
XEC
| $1.2M | ﹤0.01% |
+712
| New | +$25.6K |
|
1720
CALL
SSR Mining
SSRM
$5.57B
| $1.2M | ﹤0.01% |
1,052
+681
| +184% | +$11.2K |
|
1721
CALL
Rapid7
RPD
$634M
| $1.2M | ﹤0.01% |
276
+237
| +608% | +$12.4K |
|
|
MNDT
1722
PUT
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.2M | ﹤0.01% |
1,130
+286
| +34% | +$4.11K |
|
1723
PUT
Novavax
NVAX
$1.23B
| $1.19M | ﹤0.01% |
879
+324
| +58% | +$2.74K |
|
1724
PUT
Annaly Capital Management
NLY
$16.9B
| $1.19M | ﹤0.01% |
588
+416
| +242% | +$14.6K |
|
1725
PUT
ZTO Express
ZTO
$18.2B
| $1.19M | ﹤0.01% |
448
+333
| +290% | +$8.07K |
|
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.