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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.48% |
| 2 | Technology | 0.51% |
| 3 | Communication Services | 0.5% |
| 4 | Healthcare | 0.37% |
| 5 | Industrials | 0.31% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SFLY
801
CALL
DELISTED
Shutterfly, Inc.
SFLY
| $4.09M | 0.01% |
810
+375
| +86% | +$17.1K |
|
802
CALL
Vail Resorts
MTN
$4.81B
| $4.08M | 0.01% |
183
-42
| -19% | -$9.33K |
|
803
CALL
Labcorp
LH
$26.5B
| $4.06M | 0.01% |
274
+9
| +3% | +$1.26K |
|
|
K
804
PUT
DELISTED
Kellanova
K
| $4.03M | 0.01% |
801
+530
| +196% | +$28.1K |
|
805
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$128M
| $4.02M | 0.01% |
2,414
+435
| +22% | +$772K |
|
806
CALL
Nutanix
NTNX
$18.4B
| $4.01M | 0.01% |
1,546
+158
| +11% | +$5.51K |
|
807
PUT
Becton Dickinson
BDX
$50.3B
| $4.01M | 0.01% |
163
-139
| -46% | -$32.3K |
|
808
CALL
National Grid
NGG
$78.5B
| $4M | 0.01% |
851
+787
| +1,230% | +$36.9K |
|
809
CALL
Broadridge
BR
$19.7B
| $4M | 0.01% |
313
-7
| -2% | -$843 |
|
810
CALL
Incyte
INCY
$25.7B
| $3.97M | 0.01% |
467
-91
| -16% | -$7.3K |
|
|
HRC
811
PUT
DELISTED
HILL-ROM HOLDINGS, INC.
HRC
| $3.96M | 0.01% |
379
+28
| +8% | +$2.83K |
|
|
DISCK
812
PUT
DELISTED
Discovery, Inc. Series C Common Stock
DISCK
| $3.95M | 0.01% |
1,292
-261
| -17% | -$7.08K |
|
|
AABA
813
DELISTED
Altaba Inc
AABA
| $3.95M | 0.01% |
+56,990
| New | +$3.99M |
|
814
PUT
Hasbro
HAS
$13.1B
| $3.95M | 0.01% |
374
-104
| -22% | -$10.2K |
|
815
CALL
Elevance Health
ELV
$88.4B
| $3.95M | 0.01% |
140
+61
| +77% | +$16.7K |
|
816
CALL
Corpay
CPAY
$27.3B
| $3.93M | 0.01% |
140
+20
| +17% | +$5.24K |
|
|
JOYY
817
PUT
JOYY Inc
JOYY
$3.67B
| $3.93M | 0.01% |
564
-236
| -30% | -$18K |
|
818
CALL
Snap-on
SNA
$19.8B
| $3.92M | 0.01% |
237
+120
| +103% | +$19.5K |
|
819
PUT
Kimberly-Clark
KMB
$34.9B
| $3.92M | 0.01% |
294
+179
| +156% | +$23.1K |
|
820
CALL
Sempra
SRE
$55B
| $3.92M | 0.01% |
570
+178
| +45% | +$11.7K |
|
821
iShares 7-10 Year Treasury Bond ETF
IEF
$42.1B
| $3.91M | 0.01% |
35,582
+4,893
| +16% | +$524K |
|
|
X
822
CALL
DELISTED
US Steel
X
| $3.91M | 0.01% |
2,555
-1,045
| -29% | -$16.1K |
|
823
CALL
Capri Holdings
CPRI
$1.54B
| $3.91M | 0.01% |
1,127
+530
| +89% | +$21.6K |
|
|
GRUB
824
PUT
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $3.91M | 0.01% |
251
-289
| -54% | -$39.4K |
|
825
CALL
Marriott International
MAR
$87.8B
| $3.9M | 0.01% |
278
-204
| -42% | -$27.1K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,300 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, up from 97% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,300 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.