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 | |
|---|---|---|---|---|---|---|
1701
PUT
Exelixis
EXEL
$13.9B
| $1.67M | ﹤0.01% |
684
+398
| +139% | +$9.29K |
|
|
JNPR
1702
PUT
DELISTED
Juniper Networks
JNPR
| $1.67M | ﹤0.01% |
778
-547
| -41% | -$13K |
|
|
MDC
1703
CALL
DELISTED
M.D.C. Holdings, Inc.
MDC
| $1.67M | ﹤0.01% |
382
+184
| +93% | +$7.34K |
|
1704
CALL
LiveRamp
RAMP
$2.29B
| $1.66M | ﹤0.01% |
321
+160
| +99% | +$8K |
|
|
AXON
1705
PUT
Axon Enterprise
AXON
$40.5B
| $1.66M | ﹤0.01% |
183
-45
| -20% | -$3.91K |
|
1706
Ally Financial
ALLY
$13.1B
| $1.66M | ﹤0.01% |
66,039
-106,022
| -62% | -$2.37M |
|
1707
PUT
MP Materials
MP
$7.35B
| $1.65M | ﹤0.01% |
+1,214
| New | +$15.3K |
|
1708
CALL
Zimmer Biomet
ZBH
$17.7B
| $1.65M | ﹤0.01% |
125
-151
| -55% | -$19.7K |
|
1709
PUT
Coherent
COHR
$55.2B
| $1.64M | ﹤0.01% |
405
+228
| +129% | +$10K |
|
|
AMRN
1710
CALL
Amarin Corp
AMRN
$284M
| $1.64M | ﹤0.01% |
195
+60
| +44% | +$7.19K |
|
|
MMP
1711
PUT
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $1.64M | ﹤0.01% |
479
+19
| +4% | +$752 |
|
1712
PUT
Apollo Global Management
APO
$70.7B
| $1.64M | ﹤0.01% |
366
+9
| +3% | +$433 |
|
|
PRNB
1713
DELISTED
Principia Biopharma Inc. Common Stock
PRNB
| $1.63M | ﹤0.01% |
+16,330
| New | +$1.45M |
|
1714
PUT
Albertsons Companies
ACI
$5.4B
| $1.63M | ﹤0.01% |
+1,178
| New | +$17.2K |
|
1715
PUT
Nutrien
NTR
$32.7B
| $1.63M | ﹤0.01% |
416
+195
| +88% | +$7.1K |
|
1716
CALL
Wyndham Hotels & Resorts
WH
$5.46B
| $1.63M | ﹤0.01% |
323
+211
| +188% | +$10.3K |
|
|
MRSH
1717
PUT
Marsh
MRSH
$86.3B
| $1.63M | ﹤0.01% |
142
-54
| -28% | -$6.19K |
|
|
APHA
1718
PUT
DELISTED
Aphria Inc. Common Shares
APHA
| $1.63M | ﹤0.01% |
3,675
-938
| -20% | -$4.38K |
|
1719
PUT
Host Hotels & Resorts
HST
$16.8B
| $1.63M | ﹤0.01% |
1,508
-49
| -3% | -$541 |
|
1720
ARK Innovation ETF
ARKK
$5.89B
| $1.62M | ﹤0.01% |
+17,649
| New | +$1.51M |
|
1721
CALL
Stanley Black & Decker
SWK
$14.2B
| $1.62M | ﹤0.01% |
100
-429
| -81% | -$66.8K |
|
1722
CALL
FIVE9
FIVN
$1.77B
| $1.62M | ﹤0.01% |
125
-92
| -42% | -$11.1K |
|
|
PLAN
1723
DELISTED
Anaplan, Inc.
PLAN
| $1.62M | ﹤0.01% |
25,887
-18,131
| -41% | -$934K |
|
1724
CALL
Globus Medical
GMED
$10.4B
| $1.62M | ﹤0.01% |
327
+161
| +97% | +$8.3K |
|
1725
CALL
Bloomin' Brands
BLMN
$680M
| $1.62M | ﹤0.01% |
1,060
-439
| -29% | -$5.68K |
|
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.