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 | |
|---|---|---|---|---|---|---|
1501
PUT
Dine Brands
DIN
$435M
| $1.54M | ﹤0.01% |
536
+485
| +951% | +$35.2K |
|
|
CTRA
1502
CALL
DELISTED
Coterra Energy
CTRA
| $1.54M | ﹤0.01% |
894
+508
| +132% | +$8.04K |
|
|
SGI
1503
CALL
Somnigroup International
SGI
$15.1B
| $1.53M | ﹤0.01% |
1,404
+500
| +55% | +$9.5K |
|
1504
PUT
SouthState Bank Corp
SSB
$10.4B
| $1.53M | ﹤0.01% |
+261
| New | +$19.3K |
|
1505
PUT
Boston Properties
BXP
$11.1B
| $1.53M | ﹤0.01% |
166
+138
| +493% | +$17.8K |
|
1506
PUT
Herbalife
HLF
$1.23B
| $1.53M | ﹤0.01% |
525
-2,497
| -83% | -$93K |
|
1507
CALL
Agios Pharmaceuticals
AGIO
$2.16B
| $1.53M | ﹤0.01% |
431
-137
| -24% | -$6.33K |
|
1508
CALL
PPG Industries
PPG
$26B
| $1.53M | ﹤0.01% |
183
+93
| +103% | +$10.3K |
|
|
PLAN
1509
PUT
DELISTED
Anaplan, Inc.
PLAN
| $1.52M | ﹤0.01% |
504
+87
| +21% | +$4.34K |
|
1510
QuidelOrtho
QDEL
$1.11B
| $1.52M | ﹤0.01% |
15,585
+8,571
| +122% | +$693K |
|
1511
PUT
Deutsche Bank
DB
$66.5B
| $1.52M | ﹤0.01% |
2,368
-81
| -3% | -$673 |
|
|
CIM
1512
CALL
Chimera Investment
CIM
$1.04B
| $1.52M | ﹤0.01% |
557
+527
| +1,757% | +$29.9K |
|
1513
MGM Resorts International
MGM
$11.7B
| $1.51M | ﹤0.01% |
+128,209
| New | +$3.3M |
|
1514
PUT
XPO
XPO
$25.2B
| $1.5M | ﹤0.01% |
891
-1,448
| -62% | -$38.7K |
|
1515
CALL
Gaming and Leisure Properties
GLPI
$12.8B
| $1.5M | ﹤0.01% |
541
+244
| +82% | +$10K |
|
1516
PUT
Thomson Reuters
TRI
$39.1B
| $1.5M | ﹤0.01% |
210
-2
| -0.9% | -$156 |
|
1517
CALL
Wolfspeed
WOLF
$1.21B
| $1.5M | ﹤0.01% |
423
-85
| -17% | -$3.82K |
|
1518
CALL
JetBlue
JBLU
$1.99B
| $1.5M | ﹤0.01% |
1,672
+1,149
| +220% | +$19K |
|
1519
CALL
Lamb Weston
LW
$6.8B
| $1.5M | ﹤0.01% |
262
+59
| +29% | +$4.85K |
|
1520
PUT
Pool Corp
POOL
$6.61B
| $1.5M | ﹤0.01% |
76
+51
| +204% | +$10.9K |
|
1521
PUT
RenaissanceRe
RNR
$13.7B
| $1.49M | ﹤0.01% |
100
+90
| +900% | +$16K |
|
1522
CALL
Zebra Technologies
ZBRA
$12.5B
| $1.49M | ﹤0.01% |
81
+41
| +103% | +$9.21K |
|
1523
CALL
National Grid
NGG
$82.1B
| $1.49M | ﹤0.01% |
288
+95
| +49% | +$5.25K |
|
1524
CALL
Avis
CAR
$5.68B
| $1.48M | ﹤0.01% |
1,067
+927
| +662% | +$27.8K |
|
1525
CALL
Euronet Worldwide
EEFT
$3B
| $1.48M | ﹤0.01% |
173
+130
| +302% | +$17.2K |
|
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.