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 | |
|---|---|---|---|---|---|---|
1426
PUT
Cal-Maine
CALM
$4.18B
| $1.67M | ﹤0.01% |
379
+101
| +36% | +$3.82K |
|
|
SPR
1427
PUT
DELISTED
Spirit AeroSystems
SPR
| $1.67M | ﹤0.01% |
696
+263
| +61% | +$14.6K |
|
|
X
1428
CALL
DELISTED
US Steel
X
| $1.66M | ﹤0.01% |
2,634
-956
| -27% | -$8.01K |
|
1429
PUT
Fair Isaac
FICO
$28B
| $1.66M | ﹤0.01% |
54
-382
| -88% | -$141K |
|
1430
CALL
Ares Capital
ARCC
$13.4B
| $1.66M | ﹤0.01% |
1,540
+1,238
| +410% | +$20.9K |
|
1431
PUT
Globant
GLOB
$1.32B
| $1.66M | ﹤0.01% |
189
+163
| +627% | +$18.2K |
|
|
MAXR
1432
CALL
DELISTED
Maxar Technologies Inc. Common Stock
MAXR
| $1.66M | ﹤0.01% |
1,555
+925
| +147% | +$14.5K |
|
|
SKX
1433
PUT
DELISTED
Skechers
SKX
| $1.66M | ﹤0.01% |
698
+31
| +5% | +$1.07K |
|
1434
PUT
Ollie's Bargain Outlet
OLLI
$3.94B
| $1.65M | ﹤0.01% |
357
-107
| -23% | -$5.49K |
|
|
1435
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$349M
| $1.65M | ﹤0.01% |
+41,591
| New | +$24M |
|
|
DNKN
1436
CALL
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $1.65M | ﹤0.01% |
311
-8
| -3% | -$555 |
|
1437
PUT
Allison Transmission
ALSN
$9.92B
| $1.65M | ﹤0.01% |
506
+493
| +3,792% | +$20.6K |
|
1438
CALL
Kirby Corp
KEX
$7.97B
| $1.65M | ﹤0.01% |
379
+378
| +37,800% | +$25.7K |
|
|
UNIT
1439
PUT
Uniti Group
UNIT
$2.68B
| $1.65M | ﹤0.01% |
2,733
+1,173
| +75% | +$9.2K |
|
1440
CALL
Factset
FDS
$8.68B
| $1.64M | ﹤0.01% |
63
+5
| +9% | +$1.36K |
|
1441
Editas Medicine
EDIT
$419M
| $1.64M | ﹤0.01% |
82,584
+59,489
| +258% | +$1.5M |
|
1442
PUT
First Solar
FSLR
$22.1B
| $1.64M | ﹤0.01% |
454
-392
| -46% | -$18.6K |
|
1443
CALL
Zions Bancorporation
ZION
$10.1B
| $1.64M | ﹤0.01% |
611
-61
| -9% | -$2.51K |
|
1444
CALL
Motorola Solutions
MSI
$67.6B
| $1.63M | ﹤0.01% |
123
+52
| +73% | +$8.72K |
|
1445
CALL
Vanguard Dividend Appreciation ETF
VIG
$110B
| $1.63M | ﹤0.01% |
158
+97
| +159% | +$11.6K |
|
1446
CALL
Packaging Corp of America
PKG
$20.8B
| $1.63M | ﹤0.01% |
188
+18
| +11% | +$1.75K |
|
1447
CALL
UBS Group
UBS
$169B
| $1.63M | ﹤0.01% |
1,763
-77
| -4% | -$887 |
|
1448
PUT
Keysight
KEYS
$55.6B
| $1.63M | ﹤0.01% |
195
-571
| -75% | -$54.2K |
|
1449
Regency Centers
REG
$14.9B
| $1.63M | ﹤0.01% |
42,443
+39,171
| +1,197% | +$2.25M |
|
1450
ProShares UltraPro Dow 30
UDOW
$838M
| $1.63M | ﹤0.01% |
156,044
+97,312
| +166% | +$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.