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 | |
|---|---|---|---|---|---|---|
2651
CALL
BJ's Restaurants
BJRI
$1.41B
| $472K | ﹤0.01% |
340
-45
| -12% | -$1.45K |
|
2652
PC Connection
CNXN
$2.05B
| $472K | ﹤0.01% |
+11,454
| New | +$508K |
|
|
JNPR
2653
CALL
DELISTED
Juniper Networks
JNPR
| $472K | ﹤0.01% |
247
-771
| -76% | -$17.3K |
|
2654
CALL
Old Dominion Freight Line
ODFL
$48.5B
| $472K | ﹤0.01% |
72
-33
| -31% | -$2.19K |
|
|
MDP
2655
PUT
DELISTED
Meredith Corporation
MDP
| $472K | ﹤0.01% |
387
+379
| +4,738% | +$10.1K |
|
2656
PUT
Helmerich & Payne
HP
$3.53B
| $471K | ﹤0.01% |
301
-134
| -31% | -$4.72K |
|
2657
PUT
Infosys
INFY
$45B
| $471K | ﹤0.01% |
574
-60
| -9% | -$603 |
|
|
P
2658
CALL
Everpure Inc
P
$24.8B
| $471K | ﹤0.01% |
383
-563
| -60% | -$9.12K |
|
2659
Globant
GLOB
$1.35B
| $469K | ﹤0.01% |
5,344
+3,129
| +141% | +$349K |
|
2660
CALL
Main Street Capital
MAIN
$4.97B
| $469K | ﹤0.01% |
229
+145
| +173% | +$5.42K |
|
2661
PUT
Intellia Therapeutics
NTLA
$1.5B
| $469K | ﹤0.01% |
384
-153
| -28% | -$2.06K |
|
2662
CALL
Sinclair Inc
SBGI
$974M
| $469K | ﹤0.01% |
292
+153
| +110% | +$3.98K |
|
2663
PUT
TransUnion
TRU
$14.8B
| $469K | ﹤0.01% |
+71
| New | +$6.13K |
|
2664
PUT
Takeda Pharmaceutical
TAK
$55.1B
| $468K | ﹤0.01% |
+309
| New | +$5.6K |
|
2665
PUT
NewtekOne
NEWT
$417M
| $467K | ﹤0.01% |
354
+319
| +911% | +$6.07K |
|
2666
ProShares VIX Mid-Term Futures ETF
VIXM
$40M
| $467K | ﹤0.01% |
+12,167
| New | +$313K |
|
|
JBTM
2667
CALL
JBT Marel
JBTM
$7.14B
| $467K | ﹤0.01% |
+63
| New | +$6.3K |
|
|
QVCGA
2668
CALL
DELISTED
QVC Group Inc Series A
QVCGA
| $467K | ﹤0.01% |
16
+3
| +23% | +$1.07K |
|
|
TMX
2669
PUT
DELISTED
Terminix Global Holdings, Inc.
TMX
| $467K | ﹤0.01% |
173
+86
| +99% | +$2.93K |
|
2670
CALL
Manulife Financial
MFC
$72.6B
| $466K | ﹤0.01% |
372
-40
| -10% | -$695 |
|
2671
W.P. Carey
WPC
$17.1B
| $466K | ﹤0.01% |
+8,202
| New | +$622K |
|
2672
PUT
StoneCo
STNE
$2.62B
| $465K | ﹤0.01% |
214
-82
| -28% | -$3.13K |
|
2673
CALL
Papa John's
PZZA
$999M
| $464K | ﹤0.01% |
87
-532
| -86% | -$32K |
|
2674
PUT
Tapestry
TPR
$28.8B
| $464K | ﹤0.01% |
359
-79
| -18% | -$1.85K |
|
2675
Westlake Corp
WLK
$9.46B
| $464K | ﹤0.01% |
+12,178
| New | +$685K |
|
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.