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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2251
Direxion Daily Technology Bull 3x ETF
TECL
$5.14B
| $978K | ﹤0.01% |
+32,000
| New | +$923K |
|
2252
Magnachip Semiconductor
MX
$128M
| $977K | ﹤0.01% |
71,345
+62,112
| +673% | +$740K |
|
2253
CALL
Public Service Enterprise Group
PEG
$39.8B
| $977K | ﹤0.01% |
178
-28
| -14% | -$1.48K |
|
|
FOCS
2254
PUT
DELISTED
Focus Financial Partners Inc. Class A
FOCS
| $977K | ﹤0.01% |
298
+297
| +29,700% | +$10.5K |
|
2255
PUT
Amdocs
DOX
$5.53B
| $975K | ﹤0.01% |
170
+100
| +143% | +$5.98K |
|
2256
CF Industries
CF
$19.2B
| $973K | ﹤0.01% |
31,704
+23,600
| +291% | +$752K |
|
2257
PUT
Frontline
FRO
$8.75B
| $973K | ﹤0.01% |
1,498
+833
| +125% | +$6.38K |
|
|
TWOU
2258
CALL
DELISTED
2U Inc
TWOU
| $971K | ﹤0.01% |
10
+2
| +25% | +$2.38K |
|
2259
SS&C Technologies
SSNC
$17.8B
| $970K | ﹤0.01% |
+16,035
| New | +$959K |
|
2260
PUT
Sinclair Inc
SBGI
$974M
| $969K | ﹤0.01% |
504
+359
| +248% | +$7.25K |
|
2261
PUT
Cal-Maine
CALM
$4.28B
| $966K | ﹤0.01% |
252
+217
| +620% | +$9.18K |
|
|
SAVE
2262
DELISTED
Spirit Airlines, Inc.
SAVE
| $964K | ﹤0.01% |
59,896
+59,696
| +29,848% | +$1.03M |
|
|
JAMF
2263
CALL
DELISTED
Jamf
JAMF
| $962K | ﹤0.01% |
+256
| New | +$9.61K |
|
2264
CALL
Helmerich & Payne
HP
$3.53B
| $961K | ﹤0.01% |
656
+357
| +119% | +$6.22K |
|
|
RDS.B
2265
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $960K | ﹤0.01% |
+39,640
| New | +$1.14M |
|
2266
STAAR Surgical
STAA
$1.16B
| $959K | ﹤0.01% |
16,960
+15,501
| +1,062% | +$835K |
|
2267
CALL
Delek Logistics
DKL
$3.04B
| $958K | ﹤0.01% |
338
-30
| -8% | -$884 |
|
2268
Intuit
INTU
$81.1B
| $958K | ﹤0.01% |
2,939
+2,789
| +1,859% | +$873K |
|
2269
CALL
Qiagen
QGEN
$8.53B
| $956K | ﹤0.01% |
173
-206
| -54% | -$10.7K |
|
|
LHCG
2270
CALL
DELISTED
LHC Group LLC
LHCG
| $956K | ﹤0.01% |
45
-151
| -77% | -$29.8K |
|
2271
CALL
Assured Guaranty
AGO
$3.78B
| $955K | ﹤0.01% |
445
+321
| +259% | +$7.07K |
|
|
DVAX
2272
CALL
DELISTED
Dynavax Technologies
DVAX
| $955K | ﹤0.01% |
2,211
+102
| +5% | +$728 |
|
2273
CALL
Signet Jewelers
SIG
$3.55B
| $953K | ﹤0.01% |
510
+120
| +31% | +$1.75K |
|
|
ICPT
2274
CALL
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $953K | ﹤0.01% |
230
-124
| -35% | -$5.7K |
|
|
RST
2275
CALL
DELISTED
ROSETTA STONE INC
RST
| $953K | ﹤0.01% |
318
+304
| +2,171% | +$7.87K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.