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 | |
|---|---|---|---|---|---|---|
2176
United Parks & Resorts
PRKS
$2.11B
| $743K | ﹤0.01% |
+67,435
| New | +$1.85M |
|
2177
PUT
SiriusXM
SIRI
$10B
| $742K | ﹤0.01% |
+150
| New | +$9.81K |
|
2178
PUT
Arthur J. Gallagher & Co
AJG
$63.7B
| $741K | ﹤0.01% |
+91
| New | +$8.71K |
|
2179
PUT
Cracker Barrel
CBRL
$1.2B
| $740K | ﹤0.01% |
89
-180
| -67% | -$24.7K |
|
2180
PUT
Brunswick
BC
$5.19B
| $739K | ﹤0.01% |
209
+160
| +327% | +$8.49K |
|
2181
ProShares Ultra Gold
UGL
$650M
| $739K | ﹤0.01% |
56,876
+36,756
| +183% | +$486K |
|
|
PRAH
2182
CALL
DELISTED
PRA Health Sciences, Inc.
PRAH
| $739K | ﹤0.01% |
89
-79
| -47% | -$7.71K |
|
|
SF
2183
CALL
Stifel
SF
$12.3B
| $738K | ﹤0.01% |
403
+234
| +138% | +$5.86K |
|
2184
PUT
Synchrony
SYF
$23.7B
| $738K | ﹤0.01% |
459
+101
| +28% | +$2.94K |
|
2185
PUT
Ichor Holdings
ICHR
$3.02B
| $737K | ﹤0.01% |
385
+235
| +157% | +$7.1K |
|
2186
CALL
NOV
NOV
$7.45B
| $737K | ﹤0.01% |
750
-124
| -14% | -$2.34K |
|
2187
Pool Corp
POOL
$6.7B
| $736K | ﹤0.01% |
+3,741
| New | +$796K |
|
|
RCM
2188
PUT
DELISTED
R1 RCM Inc. Common Stock
RCM
| $736K | ﹤0.01% |
+810
| New | +$9.74K |
|
|
PRFT
2189
DELISTED
Perficient Inc
PRFT
| $736K | ﹤0.01% |
27,198
+21,701
| +395% | +$947K |
|
2190
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $734K | ﹤0.01% |
2,046
+1,422
| +228% | +$62K |
|
2191
Federal Realty Investment Trust
FRT
$10.9B
| $733K | ﹤0.01% |
9,836
+8,672
| +745% | +$998K |
|
|
SNV
2192
PUT
DELISTED
Synovus
SNV
| $732K | ﹤0.01% |
417
+369
| +769% | +$11.4K |
|
|
AYX
2193
DELISTED
Alteryx Inc
AYX
| $731K | ﹤0.01% |
7,686
-10,923
| -59% | -$1.36M |
|
2194
PUT
Brookfield
BN
$102B
| $730K | ﹤0.01% |
462
+42
| +10% | +$864 |
|
|
BLCM
2195
CALL
DELISTED
Bellicum Pharmaceuticals, Inc.
BLCM
| $730K | ﹤0.01% |
1,550
+1,498
| +2,881% | +$16.1K |
|
2196
PUT
Tenaris
TS
$29.1B
| $729K | ﹤0.01% |
605
+602
| +20,067% | +$11.1K |
|
2197
PUT
Genesco
GCO
$396M
| $728K | ﹤0.01% |
+546
| New | +$18.4K |
|
2198
CALL
Helmerich & Payne
HP
$3.53B
| $727K | ﹤0.01% |
465
+103
| +28% | +$3.63K |
|
2199
CALL
Barclays
BCS
$94.1B
| $726K | ﹤0.01% |
1,604
-870
| -35% | -$6.72K |
|
2200
PUT
Flowers Foods
FLO
$1.64B
| $726K | ﹤0.01% |
354
+318
| +883% | +$6.93K |
|
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.