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 | |
|---|---|---|---|---|---|---|
2701
CALL
Telephone and Data Systems
TDS
$3.91B
| $663K | ﹤0.01% |
360
+232
| +181% | +$4.88K |
|
2702
PUT
Upbound Group
UPBD
$1.19B
| $663K | ﹤0.01% |
222
+183
| +469% | +$5.41K |
|
2703
CALL
Yext
YEXT
$501M
| $663K | ﹤0.01% |
437
-115
| -21% | -$1.94K |
|
|
KC
2704
CALL
Kingsoft Cloud Holdings
KC
$2.84B
| $661K | ﹤0.01% |
+224
| New | +$7.65K |
|
2705
PUT
VICI Properties
VICI
$29.4B
| $661K | ﹤0.01% |
283
+189
| +201% | +$4.24K |
|
2706
CALL
Clearwater Paper
CLW
$271M
| $660K | ﹤0.01% |
174
-3
| -2% | -$108 |
|
|
2707
Clearwater Paper
CLW
$271M
| $659K | ﹤0.01% |
17,383
-2,844
| -14% | -$102K |
|
2708
PUT
LPL Financial
LPLA
$26.3B
| $659K | ﹤0.01% |
86
-83
| -49% | -$6.59K |
|
|
VER
2709
CALL
DELISTED
VEREIT, Inc.
VER
| $659K | ﹤0.01% |
203
+68
| +50% | +$2.24K |
|
|
SAND
2710
CALL
DELISTED
Sandstorm Gold
SAND
| $658K | ﹤0.01% |
780
+152
| +24% | +$1.41K |
|
|
GAP
2711
The Gap Inc
GAP
$6.84B
| $658K | ﹤0.01% |
38,652
-124,107
| -76% | -$1.85M |
|
2712
Boise Cascade
BCC
$2.74B
| $657K | ﹤0.01% |
16,478
+16,417
| +26,913% | +$712K |
|
2713
CALL
Cemex
CX
$17.4B
| $657K | ﹤0.01% |
1,730
+1,136
| +191% | +$3.71K |
|
2714
CALL
Veracyte
VCYT
$4.52B
| $656K | ﹤0.01% |
202
+2
| +1% | +$64 |
|
2715
Cytokinetics
CYTK
$11B
| $655K | ﹤0.01% |
30,296
+27,658
| +1,048% | +$647K |
|
2716
PUT
FuelCell Energy
FCEL
$1.7B
| $653K | ﹤0.01% |
102
+68
| +200% | +$5.42K |
|
|
NSLR
2717
CALL
Neostellar Capital Corp
NSLR
$262M
| $652K | ﹤0.01% |
717
+599
| +508% | +$6.27K |
|
2718
Dollar General
DG
$25.9B
| $651K | ﹤0.01% |
+3,109
| New | +$611K |
|
2719
CALL
PetMed Express
PETS
$42.5M
| $651K | ﹤0.01% |
206
+107
| +108% | +$3.54K |
|
2720
CALL
Cadence Design Systems
CDNS
$90B
| $650K | ﹤0.01% |
61
-449
| -88% | -$47.2K |
|
|
ENDP
2721
CALL
DELISTED
Endo International plc
ENDP
| $650K | ﹤0.01% |
1,971
+456
| +30% | +$1.46K |
|
2722
CALL
NeoGenomics
NEO
$1.81B
| $649K | ﹤0.01% |
176
+133
| +309% | +$4.94K |
|
2723
CALL
United States Gasoline Fund
UGA
$142M
| $649K | ﹤0.01% |
326
+22
| +7% | +$435 |
|
|
MGIC
2724
PUT
DELISTED
Magic Software Enterprises
MGIC
| $648K | ﹤0.01% |
+494
| New | +$6.43K |
|
|
MYOV
2725
DELISTED
Myovant Sciences Ltd.
MYOV
| $645K | ﹤0.01% |
45,934
+31,871
| +227% | +$593K |
|
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.