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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
926
Boston Scientific
BSX
$64.8B
| $4.41M | 0.01% |
125,734
+124,410
| +9,397% | +$4.48M |
|
927
CALL
Trane Technologies
TT
$106B
| $4.41M | 0.01% |
497
+355
| +250% | +$30.9K |
|
928
PUT
Cardinal Health
CAH
$52.9B
| $4.4M | 0.01% |
844
-64
| -7% | -$3.3K |
|
929
CALL
Camping World
CWH
$358M
| $4.4M | 0.01% |
1,619
+1,103
| +214% | +$17.8K |
|
930
PUT
Bausch Health
BHC
$1.66B
| $4.39M | 0.01% |
2,403
+983
| +69% | +$17.3K |
|
|
WCN
931
PUT
Waste Connections
WCN
$42.7B
| $4.39M | 0.01% |
468
+192
| +70% | +$17.1K |
|
932
CALL
Diageo
DEO
$45.7B
| $4.38M | 0.01% |
326
-162
| -33% | -$22.2K |
|
933
PUT
Johnson Controls International
JCI
$87.4B
| $4.36M | 0.01% |
1,277
+901
| +240% | +$27.7K |
|
934
CALL
Allstate
ALL
$65.5B
| $4.35M | 0.01% |
449
+168
| +60% | +$16.5K |
|
935
PUT
FIVE9
FIVN
$1.67B
| $4.35M | 0.01% |
393
+309
| +368% | +$30.1K |
|
|
CYBR
936
CALL
DELISTED
CyberArk
CYBR
| $4.35M | 0.01% |
438
+162
| +59% | +$15.8K |
|
937
CALL
Unilever
UL
$130B
| $4.34M | 0.01% |
703
+255
| +57% | +$15.2K |
|
938
PUT
AllianceBernstein
AB
$3.47B
| $4.34M | 0.01% |
1,593
-559
| -26% | -$13K |
|
939
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $4.33M | 0.01% |
361
-474
| -57% | -$57K |
|
940
CALL
Pan American Silver
PAAS
$18.6B
| $4.32M | 0.01% |
1,580
-546
| -26% | -$13K |
|
941
CALL
International Paper
IP
$20.1B
| $4.31M | 0.01% |
1,291
+588
| +84% | +$18.7K |
|
942
PUT
ON Semiconductor
ON
$35.1B
| $4.29M | 0.01% |
2,166
+1,699
| +364% | +$27.7K |
|
|
943
Pan American Silver
PAAS
$18.6B
| $4.29M | 0.01% |
+141,132
| New | +$3.35M |
|
|
DAY
944
CALL
DELISTED
Dayforce
DAY
| $4.29M | 0.01% |
541
+285
| +111% | +$18.3K |
|
945
Costco
COST
$411B
| $4.28M | 0.01% |
+14,128
| New | +$4.3M |
|
946
PUT
Bank of Montreal
BMO
$124B
| $4.28M | 0.01% |
807
+528
| +189% | +$26.9K |
|
|
ZGNX
947
CALL
DELISTED
Zogenix, Inc.
ZGNX
| $4.28M | 0.01% |
1,584
+1,000
| +171% | +$27.6K |
|
948
CALL
Nasdaq
NDAQ
$51.1B
| $4.28M | 0.01% |
1,074
+825
| +331% | +$30.7K |
|
949
CALL
Cloudflare
NET
$93.1B
| $4.26M | 0.01% |
1,185
+682
| +136% | +$19.1K |
|
950
PUT
Pultegroup
PHM
$23.7B
| $4.26M | 0.01% |
1,252
+628
| +101% | +$18.9K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.