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 | |
|---|---|---|---|---|---|---|
201
CALL
Lowe's Companies
LOW
$114B
| $38.5M | 0.05% |
2,322
-148
| -6% | -$22.8K |
|
202
CALL
Spotify
SPOT
$101B
| $38.2M | 0.05% |
1,575
-664
| -30% | -$172K |
|
|
UCD
203
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $37.8M | 0.05% |
17,091
+7,501
| +78% | +$16.6M |
|
204
PUT
Lam Research
LRCX
$403B
| $37.7M | 0.05% |
11,350
+6,250
| +123% | +$215K |
|
205
PUT
UnitedHealth
UNH
$396B
| $37.5M | 0.05% |
1,205
+56
| +5% | +$17.2K |
|
206
PUT
Atlassian
TEAM
$23B
| $37.4M | 0.05% |
2,059
+4
| +0.2% | +$713 |
|
207
CALL
AbbVie
ABBV
$452B
| $36.9M | 0.05% |
4,211
+180
| +4% | +$16.9K |
|
208
PUT
Abbott
ABT
$174B
| $36.6M | 0.05% |
3,366
+1,560
| +86% | +$158K |
|
209
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $36.6M | 0.05% |
2,874
-2,490
| -46% | -$759K |
|
210
CALL
Verizon
VZ
$183B
| $36.5M | 0.05% |
6,140
-533
| -8% | -$31K |
|
211
PUT
Occidental Petroleum
OXY
$56.2B
| $36.2M | 0.05% |
10,662
-3,480
| -25% | -$49.1K |
|
212
PUT
PENN Entertainment
PENN
$2.84B
| $36M | 0.05% |
4,953
+310
| +7% | +$15.2K |
|
213
PUT
American Express
AXP
$239B
| $36M | 0.05% |
3,590
-294
| -8% | -$28.9K |
|
214
CALL
Medtronic
MDT
$107B
| $35.9M | 0.05% |
3,454
+183
| +6% | +$18.4K |
|
215
PUT
lululemon athletica
LULU
$13.2B
| $35.9M | 0.05% |
1,089
-1,825
| -63% | -$609K |
|
|
ATVI
216
CALL
DELISTED
Activision Blizzard
ATVI
| $35.4M | 0.05% |
4,369
+400
| +10% | +$32.5K |
|
|
217
CALL
PENN Entertainment
PENN
$2.84B
| $35.2M | 0.05% |
4,844
-376
| -7% | -$18.4K |
|
218
PUT
iShares Core MSCI Emerging Markets ETF
IEMG
$154B
| $35.1M | 0.05% |
6,369
-1,116
| -15% | -$58.5K |
|
|
219
PUT
AbbVie
ABBV
$452B
| $35.1M | 0.05% |
4,006
-106
| -3% | -$9.98K |
|
|
220
PUT
Spotify
SPOT
$101B
| $35M | 0.05% |
1,441
-374
| -21% | -$96.6K |
|
221
PUT
Datadog
DDOG
$90.7B
| $34.9M | 0.05% |
3,415
+2,053
| +151% | +$179K |
|
222
PUT
Zscaler
ZS
$24B
| $34.8M | 0.05% |
2,472
-1,117
| -31% | -$145K |
|
223
PUT
Fastly Inc
FSLY
$3.24B
| $34.7M | 0.05% |
3,707
+1,493
| +67% | +$130K |
|
224
CALL
Accenture
ACN
$86.2B
| $34.6M | 0.05% |
1,531
+303
| +25% | +$69.4K |
|
225
PUT
Applied Materials
AMAT
$448B
| $34.4M | 0.05% |
+5,785
| New | +$357K |
|
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.