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 | |
|---|---|---|---|---|---|---|
1201
PUT
PACCAR
PCAR
$68.8B
| $2.98M | ﹤0.01% |
525
+477
| +994% | +$26.8K |
|
1202
PUT
Under Armour Class C
UA
$2.81B
| $2.98M | ﹤0.01% |
2,772
+591
| +27% | +$5.55K |
|
1203
Applied Materials
AMAT
$447B
| $2.97M | ﹤0.01% |
+50,014
| New | +$3.09M |
|
1204
PUT
Northern Trust
NTRS
$21.9B
| $2.97M | ﹤0.01% |
381
+338
| +786% | +$27.1K |
|
|
NTR
1205
PUT
DELISTED
NEW YORK MORTGAGE TRUST INC
NTR
| $2.97M | ﹤0.01% |
11,641
+10,834
| +1,343% | +$2.76M |
|
1206
PUT
Entegris
ENTG
$20.6B
| $2.97M | ﹤0.01% |
399
+12
| +3% | +$804 |
|
1207
PUT
Global Payments
GPN
$21.3B
| $2.96M | ﹤0.01% |
167
+92
| +123% | +$15.9K |
|
1208
CALL
eHealth
EHTH
$42.9M
| $2.96M | ﹤0.01% |
375
-14
| -4% | -$1.14K |
|
1209
PUT
CRISPR Therapeutics
CRSP
$4.68B
| $2.96M | ﹤0.01% |
354
-135
| -28% | -$12K |
|
1210
PUT
Kimberly-Clark
KMB
$35.6B
| $2.95M | ﹤0.01% |
200
-58
| -22% | -$8.71K |
|
1211
CALL
Bunge Global
BG
$23.7B
| $2.95M | ﹤0.01% |
646
-450
| -41% | -$20.1K |
|
|
X
1212
PUT
DELISTED
US Steel
X
| $2.95M | ﹤0.01% |
4,021
-813
| -17% | -$6.16K |
|
1213
Equity Residential
EQR
$25.6B
| $2.95M | ﹤0.01% |
57,453
+48,247
| +524% | +$2.67M |
|
1214
PUT
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $2.95M | ﹤0.01% |
329
+151
| +85% | +$13.5K |
|
1215
CALL
Avantor
AVTR
$7.75B
| $2.94M | ﹤0.01% |
1,308
+39
| +3% | +$811 |
|
|
IPFF
1216
CALL
DELISTED
iShares International Preferred Stock ETF
IPFF
| $2.94M | ﹤0.01% |
593
-552
| -48% | -$7.63K |
|
1217
CALL
Pluri
PLUR
$19.4M
| $2.93M | ﹤0.01% |
348
+246
| +241% | +$18.8K |
|
1218
PUT
Jack in the Box
JACK
$263M
| $2.93M | ﹤0.01% |
369
+186
| +102% | +$15K |
|
1219
CALL
Toronto Dominion Bank
TD
$197B
| $2.93M | ﹤0.01% |
633
-1,144
| -64% | -$53.3K |
|
1220
CALL
Markel Group
MKL
$24.5B
| $2.92M | ﹤0.01% |
30
-48
| -62% | -$48.8K |
|
1221
Colgate-Palmolive
CL
$72.1B
| $2.92M | ﹤0.01% |
37,829
+35,761
| +1,729% | +$2.73M |
|
1222
CALL
Weyerhaeuser
WY
$17B
| $2.91M | ﹤0.01% |
1,022
-266
| -21% | -$7.3K |
|
1223
CALL
Groupon
GRPN
$966M
| $2.91M | ﹤0.01% |
1,428
-200
| -12% | -$4.66K |
|
1224
CALL
Sonos
SONO
$1.73B
| $2.91M | ﹤0.01% |
1,917
-76
| -4% | -$1.12K |
|
1225
PUT
Adient
ADNT
$1.58B
| $2.91M | ﹤0.01% |
1,679
| – | – |
|
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.