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 | |
|---|---|---|---|---|---|---|
926
PUT
Alnylam Pharmaceuticals
ALNY
$35.9B
| $4.57M | 0.01% |
314
-23
| -7% | -$3.27K |
|
927
CALL
Aptiv
APTV
$11.9B
| $4.56M | 0.01% |
497
+9
| +2% | +$755 |
|
928
CALL
American Eagle Outfitters
AEO
$2.86B
| $4.55M | 0.01% |
3,074
+2,272
| +283% | +$27.1K |
|
|
IPFF
929
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $4.52M | 0.01% |
1,527
-3,181
| -68% | -$44K |
|
930
Duke Energy
DUK
$101B
| $4.51M | 0.01% |
+50,929
| New | +$4.2M |
|
931
PUT
Eaton
ETN
$161B
| $4.51M | 0.01% |
442
+119
| +37% | +$11.6K |
|
932
CALL
Bath & Body Works
BBWI
$3.9B
| $4.49M | 0.01% |
1,748
-496
| -22% | -$10.1K |
|
933
CALL
Burlington
BURL
$21.4B
| $4.49M | 0.01% |
218
+173
| +384% | +$33.7K |
|
|
PXD
934
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $4.49M | 0.01% |
522
-22
| -4% | -$2.17K |
|
935
PUT
Rio Tinto
RIO
$149B
| $4.49M | 0.01% |
743
-1,006
| -58% | -$61.7K |
|
936
CALL
PagSeguro Digital
PAGS
$2.64B
| $4.48M | 0.01% |
1,187
+78
| +7% | +$3.03K |
|
937
CALL
Public Storage
PSA
$55.3B
| $4.48M | 0.01% |
201
+107
| +114% | +$21.9K |
|
938
PUT
Norfolk Southern
NSC
$78.3B
| $4.47M | 0.01% |
209
-296
| -59% | -$59.4K |
|
939
CALL
Boston Properties
BXP
$10.8B
| $4.45M | 0.01% |
554
+46
| +9% | +$4.01K |
|
940
CALL
Aflac
AFL
$63.3B
| $4.44M | 0.01% |
1,222
+153
| +14% | +$5.57K |
|
|
CS
941
CALL
DELISTED
Credit Suisse Group
CS
| $4.44M | 0.01% |
4,455
+129
| +3% | +$1.38K |
|
|
942
PUT
Burlington
BURL
$21.4B
| $4.43M | 0.01% |
215
+66
| +44% | +$12.9K |
|
943
CALL
Cintas
CTAS
$81.3B
| $4.43M | 0.01% |
532
+488
| +1,109% | +$37.6K |
|
944
CALL
Live Nation Entertainment
LYV
$41B
| $4.42M | 0.01% |
821
-401
| -33% | -$20.7K |
|
945
PUT
Ciena
CIEN
$57.7B
| $4.42M | 0.01% |
1,113
-827
| -43% | -$43.5K |
|
946
iShares Core S&P 500 ETF
IVV
$875B
| $4.42M | 0.01% |
13,144
+10,903
| +487% | +$3.63M |
|
947
PUT
Becton Dickinson
BDX
$42.1B
| $4.4M | 0.01% |
194
-219
| -53% | -$53.8K |
|
948
CALL
Welltower
WELL
$174B
| $4.4M | 0.01% |
798
+30
| +4% | +$1.65K |
|
949
CALL
SAP
SAP
$171B
| $4.39M | 0.01% |
282
+16
| +6% | +$2.54K |
|
|
BNY
950
Bank of New York Mellon
BNY
$109B
| $4.38M | 0.01% |
+127,697
| New | +$4.65M |
|
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.