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 | Technology | 0.5% |
| 2 | Communication Services | 0.5% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.3% |
| 5 | Consumer Discretionary | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1826
abrdn Physical Gold Shares ETF
SGOL
$6.92B
| $1.08M | ﹤0.01% |
+79,340
| New | +$1M |
|
|
HYGS
1827
PUT
DELISTED
Hydrogenics Corp
HYGS
| $1.08M | ﹤0.01% |
+725
| New | +$7.15K |
|
1828
PUT
Immersion
IMMR
$216M
| $1.07M | ﹤0.01% |
1,413
-316
| -18% | -$2.67K |
|
1829
PUT
NovoCure
NVCR
$2.04B
| $1.07M | ﹤0.01% |
170
+155
| +1,033% | +$7.85K |
|
1830
CALL
Old Dominion Freight Line
ODFL
$48.5B
| $1.07M | ﹤0.01% |
216
-342
| -61% | -$16.6K |
|
1831
Outfront Media
OUT
$5.64B
| $1.07M | ﹤0.01% |
42,312
+37,735
| +824% | +$919K |
|
1832
PUT
Kornit Digital
KRNT
$706M
| $1.07M | ﹤0.01% |
339
+16
| +5% | +$442 |
|
1833
PUT
BlackBerry
BB
$5.01B
| $1.07M | ﹤0.01% |
1,438
+709
| +97% | +$6.15K |
|
1834
Arlo Technologies
ARLO
$1.4B
| $1.07M | ﹤0.01% |
266,784
+38,038
| +17% | +$149K |
|
1835
PUT
Nucor
NUE
$56.4B
| $1.07M | ﹤0.01% |
194
-273
| -58% | -$15K |
|
1836
Direxion Daily FTSE China Bull 3X ETF
YINN
$660M
| $1.07M | ﹤0.01% |
+2,497
| New | +$1.07M |
|
|
RST
1837
PUT
DELISTED
ROSETTA STONE INC
RST
| $1.07M | ﹤0.01% |
466
+104
| +29% | +$2.5K |
|
1838
ProShares Short VIX Short-Term Futures ETF
SVXY
$220M
| $1.06M | ﹤0.01% |
39,466
+12,392
| +46% | +$328K |
|
1839
CALL
Everest Group
EG
$15.2B
| $1.06M | ﹤0.01% |
43
+21
| +95% | +$5.04K |
|
1840
CALL
Omega Healthcare
OHI
$15.4B
| $1.06M | ﹤0.01% |
289
+98
| +51% | +$3.57K |
|
1841
PUT
Ollie's Bargain Outlet
OLLI
$4.01B
| $1.06M | ﹤0.01% |
122
+25
| +26% | +$2.36K |
|
|
RTN
1842
DELISTED
Raytheon Company
RTN
| $1.06M | ﹤0.01% |
6,109
-6,939
| -53% | -$1.25M |
|
1843
United Parks & Resorts
PRKS
$2.11B
| $1.06M | ﹤0.01% |
34,132
+14,963
| +78% | +$411K |
|
|
CLGX
1844
CALL
DELISTED
Corelogic, Inc.
CLGX
| $1.06M | ﹤0.01% |
253
+31
| +14% | +$1.26K |
|
|
1845
BlackBerry
BB
$5.01B
| $1.06M | ﹤0.01% |
141,787
+45,007
| +47% | +$391K |
|
|
BID
1846
PUT
DELISTED
Sotheby's
BID
| $1.06M | ﹤0.01% |
182
+162
| +810% | +$6.77K |
|
|
SRG
1847
CALL
Seritage Growth Properties
SRG
$130M
| $1.06M | ﹤0.01% |
246
-587
| -70% | -$25.8K |
|
1848
PUT
Ericsson
ERIC
$30.7B
| $1.05M | ﹤0.01% |
1,111
+482
| +77% | +$4.67K |
|
1849
PUT
Energizer
ENR
$1.44B
| $1.05M | ﹤0.01% |
273
+217
| +388% | +$9.71K |
|
1850
CALL
Exelon
EXC
$48.6B
| $1.05M | ﹤0.01% |
308
-668
| -68% | -$23.6K |
|
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 1,301 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 Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.
- 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 1,301 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.