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 | |
|---|---|---|---|---|---|---|
1476
CALL
F5
FFIV
$22.1B
| $1.58M | ﹤0.01% |
148
+19
| +15% | +$2.32K |
|
1477
Alnylam Pharmaceuticals
ALNY
$36.5B
| $1.57M | ﹤0.01% |
+14,470
| New | +$1.67M |
|
|
DISH
1478
DELISTED
DISH Network Corp.
DISH
| $1.57M | ﹤0.01% |
78,693
+41,347
| +111% | +$1.34M |
|
|
NLSN
1479
CALL
DELISTED
Nielsen Holdings plc
NLSN
| $1.57M | ﹤0.01% |
1,254
+575
| +85% | +$10.8K |
|
1480
CALL
Viasat
VSAT
$9.98B
| $1.57M | ﹤0.01% |
437
+7
| +2% | +$404 |
|
1481
CALL
Vornado Realty Trust
VNO
$7.54B
| $1.57M | ﹤0.01% |
433
+139
| +47% | +$7.91K |
|
1482
CALL
Alcon
ALC
$33.3B
| $1.56M | ﹤0.01% |
308
+297
| +2,700% | +$17.1K |
|
1483
Quest Diagnostics
DGX
$25.1B
| $1.56M | ﹤0.01% |
19,467
+3,656
| +23% | +$379K |
|
1484
CALL
Deutsche Bank
DB
$66.7B
| $1.56M | ﹤0.01% |
2,433
-510
| -17% | -$4.24K |
|
1485
CALL
Knight Transportation
KNX
$12B
| $1.56M | ﹤0.01% |
476
+359
| +307% | +$12.7K |
|
1486
PUT
Safety Insurance
SAFT
$1.51B
| $1.56M | ﹤0.01% |
185
-46
| -20% | -$4.01K |
|
1487
CALL
Murphy USA
MUSA
$11.4B
| $1.56M | ﹤0.01% |
185
+1
| +0.5% | +$104 |
|
1488
PUT
Jefferies Financial Group
JEF
$12.9B
| $1.56M | ﹤0.01% |
1,193
+855
| +253% | +$16.3K |
|
1489
Cheniere Energy
LNG
$56.7B
| $1.55M | ﹤0.01% |
46,426
+20,478
| +79% | +$1.05M |
|
1490
CALL
Oneok
OKE
$59.1B
| $1.55M | ﹤0.01% |
713
+260
| +57% | +$15.8K |
|
|
ZEN
1491
CALL
DELISTED
ZENDESK INC
ZEN
| $1.55M | ﹤0.01% |
243
-1,359
| -85% | -$106K |
|
1492
PUT
VF Corp
VFC
$6.72B
| $1.55M | ﹤0.01% |
287
-122
| -30% | -$9.51K |
|
|
CZZ
1493
CALL
DELISTED
Cosan Limited
CZZ
| $1.55M | ﹤0.01% |
1,261
+1,244
| +7,318% | +$23.8K |
|
1494
PUT
Capri Holdings
CPRI
$1.8B
| $1.55M | ﹤0.01% |
1,434
-871
| -38% | -$22.9K |
|
|
JKS
1495
CALL
JinkoSolar
JKS
$793M
| $1.54M | ﹤0.01% |
1,041
+766
| +279% | +$16.1K |
|
1496
CALL
KB Home
KBH
$3.49B
| $1.54M | ﹤0.01% |
853
+393
| +85% | +$12.6K |
|
1497
CALL
Moody's
MCO
$82.5B
| $1.54M | ﹤0.01% |
73
+16
| +28% | +$3.89K |
|
1498
CALL
Ralph Lauren
RL
$22.5B
| $1.54M | ﹤0.01% |
231
-375
| -62% | -$39.4K |
|
1499
PUT
Goodyear
GT
$2.08B
| $1.54M | ﹤0.01% |
2,648
+1,373
| +108% | +$15K |
|
1500
Western Digital
WDC
$184B
| $1.54M | ﹤0.01% |
48,895
-55,753
| -53% | -$2.47M |
|
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.