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 | |
|---|---|---|---|---|---|---|
3501
CALL
MPLX
MPLX
$59.2B
| $216K | ﹤0.01% |
186
-100
| -35% | -$2.05K |
|
|
CONN
3502
DELISTED
Conn's Inc.
CONN
| $216K | ﹤0.01% |
51,686
+20,502
| +66% | +$167K |
|
3503
CALL
Brookfield Infrastructure Partners
BIP
$18.6B
| $215K | ﹤0.01% |
152
+88
| +138% | +$2.57K |
|
3504
CALL
CarGurus
CARG
$3.15B
| $215K | ﹤0.01% |
114
+70
| +159% | +$2K |
|
3505
Exelixis
EXEL
$14B
| $215K | ﹤0.01% |
12,519
-25,935
| -67% | -$474K |
|
3506
CALL
Groupon
GRPN
$1.05B
| $215K | ﹤0.01% |
110
+85
| +340% | +$3.35K |
|
3507
PUT
Mitek Systems
MITK
$768M
| $215K | ﹤0.01% |
273
+209
| +327% | +$1.78K |
|
|
SMAR
3508
PUT
DELISTED
Smartsheet Inc.
SMAR
| $215K | ﹤0.01% |
52
| – | – |
|
|
TIVO
3509
PUT
DELISTED
Tivo Inc
TIVO
| $215K | ﹤0.01% |
304
-105
| -26% | -$774 |
|
3510
PUT
Emergent Biosolutions
EBS
$378M
| $214K | ﹤0.01% |
37
+32
| +640% | +$1.84K |
|
3511
PUT
Frontline
FRO
$8.59B
| $214K | ﹤0.01% |
223
+77
| +53% | +$718 |
|
3512
CALL
AMC Global Media
AMCX
$445M
| $213K | ﹤0.01% |
88
+57
| +184% | +$1.93K |
|
3513
PUT
Core Laboratories
CLB
$518M
| $213K | ﹤0.01% |
206
+187
| +984% | +$5.23K |
|
3514
PUT
Kratos Defense & Security Solutions
KTOS
$9.27B
| $213K | ﹤0.01% |
154
+53
| +52% | +$914 |
|
3515
CALL
Unisys
UIS
$245M
| $213K | ﹤0.01% |
173
-262
| -60% | -$3.35K |
|
3516
CALL
Cimpress
CMPR
$2.41B
| $212K | ﹤0.01% |
40
+38
| +1,900% | +$3.85K |
|
3517
Galicia Financial Group
GGAL
$8.03B
| $212K | ﹤0.01% |
+30,143
| New | +$383K |
|
3518
PUT
Global Partners
GLP
$1.64B
| $212K | ﹤0.01% |
241
+47
| +24% | +$790 |
|
3519
Merit Medical Systems
MMSI
$4.54B
| $212K | ﹤0.01% |
6,812
-26,759
| -80% | -$953K |
|
3520
PUT
Oshkosh
OSK
$9.66B
| $212K | ﹤0.01% |
33
-73
| -69% | -$5.72K |
|
3521
PUT
Teucrium Soybean Fund
SOYB
$62.1M
| $212K | ﹤0.01% |
216
+160
| +286% | +$2.35K |
|
|
MFA
3522
CALL
MFA Financial
MFA
$927M
| $211K | ﹤0.01% |
+341
| New | +$9.08K |
|
|
3523
CALL
Mitek Systems
MITK
$768M
| $211K | ﹤0.01% |
268
+249
| +1,311% | +$2.12K |
|
3524
CALL
Upland Software
UPLD
$13.1M
| $211K | ﹤0.01% |
8
-5
| -38% | -$1.81K |
|
3525
Vermilion Energy
VET
$1.62B
| $211K | ﹤0.01% |
+67,874
| New | +$757K |
|
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.