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 | |
|---|---|---|---|---|---|---|
|
NSTG
3251
CALL
DELISTED
NanoString Technologies, Inc.
NSTG
| $375K | ﹤0.01% |
128
+126
| +6,300% | +$3.75K |
|
3252
PUT
Credicorp
BAP
$30.9B
| $374K | ﹤0.01% |
+28
| New | +$3.99K |
|
3253
PUT
Graco
GGG
$12.9B
| $374K | ﹤0.01% |
78
+28
| +56% | +$1.32K |
|
3254
PUT
MPLX
MPLX
$59.5B
| $374K | ﹤0.01% |
217
-22
| -9% | -$376 |
|
3255
Veeco
VECO
$3.15B
| $374K | ﹤0.01% |
+27,762
| New | +$319K |
|
3256
CALL
Ashland
ASH
$3.04B
| $373K | ﹤0.01% |
54
-28
| -34% | -$1.74K |
|
3257
CRISPR Therapeutics
CRSP
$4.58B
| $373K | ﹤0.01% |
5,082
+4,991
| +5,485% | +$292K |
|
|
SAFE
3258
CALL
Safehold
SAFE
$1.19B
| $373K | ﹤0.01% |
62
-49
| -44% | -$2.47K |
|
3259
PUT
Watsco Inc
WSO
$14.9B
| $373K | ﹤0.01% |
21
-35
| -63% | -$5.79K |
|
3260
United Parks & Resorts
PRKS
$2.11B
| $373K | ﹤0.01% |
25,215
-42,220
| -63% | -$622K |
|
|
LMNX
3261
DELISTED
Luminex Corp
LMNX
| $373K | ﹤0.01% |
11,497
+5,561
| +94% | +$176K |
|
3262
CALL
Cenovus Energy
CVE
$54.6B
| $372K | ﹤0.01% |
797
+339
| +74% | +$1.3K |
|
3263
Karyopharm Therapeutics
KPTI
$168M
| $372K | ﹤0.01% |
+1,313
| New | +$388K |
|
|
RP
3264
DELISTED
RealPage, Inc.
RP
| $372K | ﹤0.01% |
5,733
-9,603
| -63% | -$606K |
|
3265
PUT
Everest Group
EG
$15.2B
| $371K | ﹤0.01% |
18
-135
| -88% | -$26.3K |
|
3266
CALL
PRA Group
PRAA
$648M
| $371K | ﹤0.01% |
96
-263
| -73% | -$8.34K |
|
3267
Sturm, Ruger & Co
RGR
$610M
| $371K | ﹤0.01% |
4,887
+4,721
| +2,844% | +$287K |
|
3268
CALL
Marcus Corp
MCS
$732M
| $370K | ﹤0.01% |
279
+84
| +43% | +$1.13K |
|
|
TSE
3269
CALL
DELISTED
Trinseo
TSE
| $370K | ﹤0.01% |
167
+120
| +255% | +$2.46K |
|
3270
United Therapeutics
UTHR
$26.3B
| $370K | ﹤0.01% |
+3,064
| New | +$345K |
|
|
FRC
3271
CALL
DELISTED
First Republic Bank
FRC
| $370K | ﹤0.01% |
35
-131
| -79% | -$13.4K |
|
3272
CALL
Group 1 Automotive
GPI
$3.94B
| $369K | ﹤0.01% |
56
-1
| -2% | -$57 |
|
3273
Global X Uranium ETF
URA
$5.54B
| $368K | ﹤0.01% |
33,978
+29,065
| +592% | +$307K |
|
|
NTR
3274
CALL
DELISTED
NEW YORK MORTGAGE TRUST INC
NTR
| $368K | ﹤0.01% |
1,413
+411
| +41% | +$107K |
|
3275
PUT
Manhattan Associates
MANH
$8.97B
| $367K | ﹤0.01% |
39
+21
| +117% | +$1.56K |
|
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.