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 | |
|---|---|---|---|---|---|---|
1976
CALL
Cleveland-Cliffs
CLF
$6.81B
| $1.2M | ﹤0.01% |
2,173
-2,531
| -54% | -$12.3K |
|
1977
CALL
Penumbra
PEN
$12.5B
| $1.2M | ﹤0.01% |
67
+6
| +10% | +$1.04K |
|
1978
PUT
Editas Medicine
EDIT
$399M
| $1.2M | ﹤0.01% |
405
-456
| -53% | -$11.9K |
|
1979
CALL
KeyCorp
KEY
$24.3B
| $1.2M | ﹤0.01% |
983
+586
| +148% | +$6.81K |
|
1980
PUT
Tenet Healthcare
THC
$20.1B
| $1.2M | ﹤0.01% |
661
+504
| +321% | +$9.93K |
|
1981
PUT
British American Tobacco
BTI
$132B
| $1.2M | ﹤0.01% |
308
-78
| -20% | -$2.99K |
|
1982
CALL
Cullen/Frost Bankers
CFR
$10.3B
| $1.2M | ﹤0.01% |
160
+97
| +154% | +$6.76K |
|
1983
PUT
Old Dominion Freight Line
ODFL
$48.5B
| $1.19M | ﹤0.01% |
130
-36
| -22% | -$2.73K |
|
1984
PUT
Allstate
ALL
$66.9B
| $1.19M | ﹤0.01% |
123
+20
| +19% | +$1.97K |
|
1985
PUT
Liberty Media Series A
FWONA
$22.3B
| $1.19M | ﹤0.01% |
377
+6
| +2% | +$167 |
|
1986
CALL
Lincoln National
LNC
$7.91B
| $1.19M | ﹤0.01% |
324
+56
| +21% | +$1.97K |
|
|
MPT
1987
CALL
Medical Properties Trust
MPT
$2.89B
| $1.19M | ﹤0.01% |
634
-15
| -2% | -$266 |
|
1988
CALL
AvalonBay Communities
AVB
$27.1B
| $1.19M | ﹤0.01% |
77
+48
| +166% | +$7.59K |
|
1989
PUT
Helen of Troy
HELE
$663M
| $1.19M | ﹤0.01% |
63
+50
| +385% | +$8.18K |
|
1990
Moody's
MCO
$81.7B
| $1.18M | ﹤0.01% |
4,313
-1,143
| -21% | -$290K |
|
1991
CALL
Trinity Industries
TRN
$2.97B
| $1.18M | ﹤0.01% |
556
+435
| +360% | +$8.37K |
|
1992
Cardinal Health
CAH
$53.4B
| $1.18M | ﹤0.01% |
22,647
-5,261
| -19% | -$271K |
|
|
XEC
1993
DELISTED
CIMAREX ENERGY CO
XEC
| $1.18M | ﹤0.01% |
42,843
-14,827
| -26% | -$368K |
|
1994
CALL
Middleby
MIDD
$6.05B
| $1.18M | ﹤0.01% |
149
+96
| +181% | +$6.22K |
|
1995
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$1.35B
| $1.18M | ﹤0.01% |
39,580
-31,411
| -44% | -$867K |
|
1996
PUT
Bank OZK
OZK
$5.49B
| $1.18M | ﹤0.01% |
501
-66
| -12% | -$1.42K |
|
1997
PUT
Group 1 Automotive
GPI
$3.94B
| $1.17M | ﹤0.01% |
178
+136
| +324% | +$7.78K |
|
1998
iQIYI
IQ
$1.18B
| $1.17M | ﹤0.01% |
50,651
-6,684
| -12% | -$124K |
|
|
PMT
1999
CALL
PennyMac Mortgage Investment
PMT
$849M
| $1.17M | ﹤0.01% |
670
-601
| -47% | -$7.21K |
|
2000
CALL
Trimble
TRMB
$12.3B
| $1.17M | ﹤0.01% |
272
+98
| +56% | +$3.67K |
|
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.