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 | |
|---|---|---|---|---|---|---|
776
PUT
Lamar Advertising Co
LAMR
$16B
| $4.31M | 0.01% |
840
+836
| +20,900% | +$67.4K |
|
777
CALL
Ross Stores
ROST
$75.7B
| $4.3M | 0.01% |
494
-624
| -56% | -$66.6K |
|
778
CALL
Estee Lauder
EL
$29.4B
| $4.29M | 0.01% |
269
+87
| +48% | +$16.8K |
|
779
PUT
Dow Inc
DOW
$23B
| $4.28M | 0.01% |
1,464
+501
| +52% | +$21.3K |
|
780
PUT
Axsome Therapeutics
AXSM
$12.3B
| $4.28M | 0.01% |
727
-275
| -27% | -$22.4K |
|
781
CALL
Cracker Barrel
CBRL
$1.16B
| $4.26M | 0.01% |
512
-458
| -47% | -$62.9K |
|
782
CALL
Yum China
YUMC
$14.8B
| $4.26M | 0.01% |
999
+265
| +36% | +$11.8K |
|
783
PUT
Agnico Eagle Mines
AEM
$72B
| $4.25M | 0.01% |
1,068
-97
| -8% | -$5.11K |
|
|
CS
784
CALL
DELISTED
Credit Suisse Group
CS
| $4.25M | 0.01% |
5,253
+3,725
| +244% | +$43.3K |
|
|
INFO
785
CALL
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $4.25M | 0.01% |
708
+258
| +57% | +$18.6K |
|
786
CALL
Sea Limited
SE
$63.9B
| $4.24M | 0.01% |
958
-2,200
| -70% | -$98.7K |
|
787
PUT
McKesson
MCK
$95.2B
| $4.23M | 0.01% |
313
-225
| -42% | -$33K |
|
788
CALL
Chegg
CHGG
$102M
| $4.21M | 0.01% |
1,178
+495
| +72% | +$19.3K |
|
|
789
PUT
Ross Stores
ROST
$75.7B
| $4.2M | 0.01% |
483
-8
| -2% | -$854 |
|
790
CALL
Darden Restaurants
DRI
$22B
| $4.2M | 0.01% |
771
+305
| +65% | +$29.7K |
|
791
PUT
Danaher
DHR
$130B
| $4.19M | 0.01% |
342
-3,459
| -91% | -$466K |
|
792
PUT
Iridium Communications
IRDM
$5B
| $4.19M | 0.01% |
1,875
+1,763
| +1,574% | +$45.6K |
|
793
PUT
Shake Shack
SHAK
$2.23B
| $4.18M | 0.01% |
1,109
+26
| +2% | +$1.54K |
|
|
AMTD
794
CALL
DELISTED
TD Ameritrade Holding Corp
AMTD
| $4.16M | 0.01% |
1,200
-207
| -15% | -$9.02K |
|
795
PUT
Labcorp
LH
$24.3B
| $4.16M | 0.01% |
383
+9
| +2% | +$1.3K |
|
796
CALL
Sysco
SYY
$38.8B
| $4.16M | 0.01% |
911
+780
| +595% | +$54K |
|
797
PUT
Seagate
STX
$210B
| $4.15M | 0.01% |
851
+107
| +14% | +$5.71K |
|
798
CALL
BioMarin Pharmaceuticals
BMRN
$11.2B
| $4.15M | 0.01% |
491
+153
| +45% | +$13.2K |
|
799
PUT
Canadian Imperial Bank of Commerce
CM
$107B
| $4.14M | 0.01% |
1,428
+1,202
| +532% | +$44.7K |
|
800
Carnival Corporation Ltd
CCL
$35.2B
| $4.13M | 0.01% |
313,821
+259,380
| +476% | +$9.23M |
|
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.