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
|
+$86.9M |
| 2 |
Walt Disney
DIS
|
+$25.5M |
| 3 |
Baidu
BIDU
|
+$12.3M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$12.3M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$66M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$60.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$33.9M |
| 4 |
Apple
AAPL
|
+$21.1M |
| 5 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$18.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 0.58% |
| 2 | Technology | 0.42% |
| 3 | Healthcare | 0.34% |
| 4 | Consumer Discretionary | 0.29% |
| 5 | Industrials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CNXM
2551
PUT
DELISTED
CNX Midstream Partners LP
CNXM
| $556K | ﹤0.01% |
366
+336
| +1,120% | +$5.38K |
|
2552
CALL
Enbridge
ENB
$124B
| $554K | ﹤0.01% |
+153
| New | +$5.51K |
|
2553
PUT
Boot Barn
BOOT
$4.55B
| $553K | ﹤0.01% |
188
+183
| +3,660% | +$4.62K |
|
|
WBT
2554
PUT
DELISTED
Welbilt, Inc.
WBT
| $552K | ﹤0.01% |
337
+326
| +2,964% | +$4.76K |
|
2555
CALL
Ryder
R
$10.3B
| $551K | ﹤0.01% |
89
+68
| +324% | +$3.98K |
|
|
ROCC
2556
CALL
DELISTED
Ranger Oil Corporation Class A Common Stock
ROCC
| $551K | ﹤0.01% |
125
-144
| -54% | -$7.71K |
|
|
HBI
2557
CALL
DELISTED
Hanesbrands
HBI
| $550K | ﹤0.01% |
308
+56
| +22% | +$930 |
|
2558
PUT
Bloom Energy
BE
$52.6B
| $549K | ﹤0.01% |
425
+276
| +185% | +$3.37K |
|
2559
CF Industries
CF
$19.2B
| $549K | ﹤0.01% |
13,432
+2,806
| +26% | +$119K |
|
2560
CALL
Kornit Digital
KRNT
$706M
| $549K | ﹤0.01% |
231
-453
| -66% | -$9.63K |
|
|
BERY
2561
CALL
DELISTED
Berry Global Group, Inc.
BERY
| $549K | ﹤0.01% |
111
-280
| -72% | -$13.3K |
|
2562
PUT
OneSpan
OSPN
$562M
| $547K | ﹤0.01% |
285
+280
| +5,600% | +$4.76K |
|
2563
CALL
Pinnacle Financial Partners Inc
PNFP
$15.5B
| $547K | ﹤0.01% |
100
+85
| +567% | +$4.69K |
|
2564
CALL
Yeti Holdings
YETI
$3.82B
| $547K | ﹤0.01% |
181
+128
| +242% | +$2.79K |
|
|
LEXEA
2565
CALL
DELISTED
Liberty Expedia Holdings, Inc. Class A Common Stock
LEXEA
| $547K | ﹤0.01% |
+128
| New | +$5.5K |
|
2566
PUT
Intellia Therapeutics
NTLA
$1.5B
| $546K | ﹤0.01% |
320
+310
| +3,100% | +$4.62K |
|
2567
PUT
OneMain Financial
OMF
$6.9B
| $546K | ﹤0.01% |
172
+82
| +91% | +$2.54K |
|
|
ESV
2568
DELISTED
Ensco Rowan plc
ESV
| $546K | ﹤0.01% |
34,785
-11,771
| -25% | -$205K |
|
2569
ICICI Bank
IBN
$106B
| $545K | ﹤0.01% |
+47,565
| New | +$494K |
|
2570
CALL
Cimpress
CMPR
$2.37B
| $544K | ﹤0.01% |
68
+33
| +94% | +$3.02K |
|
2571
PUT
Carter's
CRI
$1.43B
| $544K | ﹤0.01% |
54
+42
| +350% | +$3.75K |
|
2572
PUT
Ecopetrol
EC
$32.9B
| $544K | ﹤0.01% |
254
+200
| +370% | +$3.92K |
|
|
GPMT
2573
PUT
Granite Point Mortgage Trust
GPMT
$63.7M
| $544K | ﹤0.01% |
+293
| New | +$5.53K |
|
2574
CALL
Vulcan Materials
VMC
$36.3B
| $544K | ﹤0.01% |
46
-134
| -74% | -$14.5K |
|
2575
PUT
TC Energy
TRP
$73.5B
| $543K | ﹤0.01% |
121
+72
| +147% | +$3.09K |
|
Similar funds
Simplex Trading's Q1 2019 Portfolio in Review
As of Q1 2019, Simplex Trading held 8,479 positions worth $36B, up 5.5% from $34.1B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q1 2019 filing shows 1,472 new, 3,049 increased, 2,419 reduced and 1,324 closed positions. Its largest new stake was Walt Disney: 228,471 shares worth $25.4M. The largest sale was Amazon, an estimated $66M.
By sector, the portfolio is most concentrated in Communication Services at 0.58% of assets, up from 0.49% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q1 2019 buy was Walt Disney: 228,471 shares worth $25.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q1 2019, an estimated $86.9M increase.
- Simplex Trading's biggest Q1 2019 reduction was iShares Russell 2000 ETF, cutting an estimated $60.3M.
- Simplex Trading fully exited Amazon in Q1 2019, selling an estimated $66M.
- Simplex Trading's ten largest holdings make up 35% of its $36B portfolio in Q1 2019.
- Simplex Trading opened 1,472 new positions and closed 1,324 in Q1 2019.
- Simplex Trading's portfolio value rose 5.5% quarter-over-quarter to $36B.
Based on Simplex Trading's 13F filing for Q1 2019, filed 18 Apr 2019.