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 | |
|---|---|---|---|---|---|---|
1676
TripAdvisor
TRIP
$1.59B
| $1.25M | ﹤0.01% |
72,089
+70,095
| +3,515% | +$1.78M |
|
1677
CALL
Allison Transmission
ALSN
$10.1B
| $1.25M | ﹤0.01% |
384
-234
| -38% | -$9.76K |
|
1678
CALL
Capri Holdings
CPRI
$1.77B
| $1.25M | ﹤0.01% |
1,161
-6
| -0.5% | -$158 |
|
|
ETFC
1679
CALL
DELISTED
E*Trade Financial Corporation
ETFC
| $1.25M | ﹤0.01% |
365
-666
| -65% | -$28.1K |
|
1680
PUT
EPR Properties
EPR
$4.86B
| $1.25M | ﹤0.01% |
516
-58
| -10% | -$3.33K |
|
|
GLIBA
1681
CALL
DELISTED
GCI Liberty, Inc. Class A Common Stock (DE)
GLIBA
| $1.25M | ﹤0.01% |
219
-6
| -3% | -$407 |
|
1682
CALL
Cirrus Logic
CRUS
$6.74B
| $1.25M | ﹤0.01% |
190
-97
| -34% | -$7.17K |
|
1683
CALL
PagSeguro Digital
PAGS
$2.57B
| $1.24M | ﹤0.01% |
643
+91
| +16% | +$2.76K |
|
1684
PUT
PennyMac Financial
PFSI
$4.38B
| $1.24M | ﹤0.01% |
562
+542
| +2,710% | +$17.4K |
|
|
BPMC
1685
CALL
DELISTED
Blueprint Medicines
BPMC
| $1.24M | ﹤0.01% |
212
-172
| -45% | -$11.1K |
|
1686
CALL
Dynatrace
DT
$12.1B
| $1.24M | ﹤0.01% |
520
+390
| +300% | +$11.2K |
|
|
RDFN
1687
CALL
DELISTED
Redfin
RDFN
| $1.24M | ﹤0.01% |
802
+530
| +195% | +$12.3K |
|
1688
CALL
Ionis Pharmaceuticals
IONS
$9.35B
| $1.23M | ﹤0.01% |
261
-238
| -48% | -$13.3K |
|
1689
CALL
Hain Celestial
HAIN
$47.8M
| $1.23M | ﹤0.01% |
475
+197
| +71% | +$4.92K |
|
|
LHCG
1690
PUT
DELISTED
LHC Group LLC
LHCG
| $1.23M | ﹤0.01% |
88
-303
| -77% | -$42.2K |
|
1691
Nokia
NOK
$50.8B
| $1.23M | ﹤0.01% |
+396,985
| New | +$1.48M |
|
1692
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$10.6M
| $1.23M | ﹤0.01% |
+79,188
| New | +$1.38M |
|
1693
Zurn Elkay Water Solutions
ZWS
$8.07B
| $1.23M | ﹤0.01% |
112,393
+87,913
| +359% | +$1.28M |
|
|
VG
1694
CALL
DELISTED
Vonage Holdings Corporation
VG
| $1.23M | ﹤0.01% |
1,698
+795
| +88% | +$6.48K |
|
1695
PUT
Teck Resources
TECK
$29.5B
| $1.23M | ﹤0.01% |
1,623
+1,382
| +573% | +$16.6K |
|
|
CLVS
1696
PUT
DELISTED
Clovis Oncology, Inc.
CLVS
| $1.23M | ﹤0.01% |
1,929
-1,428
| -43% | -$11.5K |
|
1697
PUT
Chegg
CHGG
$108M
| $1.22M | ﹤0.01% |
342
+253
| +284% | +$9.88K |
|
1698
PUT
Cullen/Frost Bankers
CFR
$10.3B
| $1.22M | ﹤0.01% |
219
+190
| +655% | +$15.5K |
|
1699
PUT
Pan American Silver
PAAS
$18.6B
| $1.22M | ﹤0.01% |
850
-590
| -41% | -$12.3K |
|
1700
PUT
Assurant
AIZ
$13.7B
| $1.22M | ﹤0.01% |
117
+114
| +3,800% | +$14.1K |
|
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.