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 | |
|---|---|---|---|---|---|---|
351
PUT
NextEra Energy
NEE
$186B
| $17.2M | 0.03% |
2,864
-240
| -8% | -$14.4K |
|
352
PUT
Bilibili
BILI
$7.4B
| $17.2M | 0.03% |
3,706
+342
| +10% | +$11.1K |
|
353
AT&T
T
$160B
| $17.1M | 0.03% |
+747,305
| New | +$17M |
|
354
PUT
DexCom
DXCM
$27.6B
| $16.8M | 0.03% |
1,660
+1,192
| +255% | +$107K |
|
355
CALL
Tyson Foods
TSN
$20.1B
| $16.6M | 0.03% |
2,780
+465
| +20% | +$28.2K |
|
356
PUT
Abbott
ABT
$175B
| $16.5M | 0.03% |
1,806
-1,289
| -42% | -$117K |
|
357
PUT
Lam Research
LRCX
$399B
| $16.5M | 0.03% |
5,100
-4,860
| -49% | -$133K |
|
358
CALL
Fastly Inc
FSLY
$3.2B
| $16.4M | 0.03% |
1,922
+1,499
| +354% | +$59.1K |
|
359
CALL
Teva Pharmaceuticals
TEVA
$35.1B
| $16.3M | 0.03% |
13,242
-536
| -4% | -$6.06K |
|
360
PUT
Workday
WDAY
$32.7B
| $16.1M | 0.03% |
862
+109
| +14% | +$17.6K |
|
361
CALL
Newmont
NEM
$102B
| $16.1M | 0.03% |
2,604
+145
| +6% | +$8.58K |
|
362
CALL
Eli Lilly
LLY
$1.04T
| $16.1M | 0.03% |
978
-1,022
| -51% | -$157K |
|
|
TIF
363
PUT
DELISTED
Tiffany & Co.
TIF
| $16M | 0.03% |
1,316
-1,456
| -53% | -$182K |
|
364
CALL
Datadog
DDOG
$87.5B
| $16M | 0.03% |
1,845
+1,177
| +176% | +$71.7K |
|
365
PUT
United Parcel Service
UPS
$98.5B
| $15.9M | 0.03% |
1,434
-1,477
| -51% | -$147K |
|
366
CALL
PENN Entertainment
PENN
$2.8B
| $15.9M | 0.03% |
5,220
+2,337
| +81% | +$53.5K |
|
367
PUT
Take-Two Interactive
TTWO
$43.4B
| $15.9M | 0.03% |
1,140
+747
| +190% | +$97.7K |
|
|
WBA
368
CALL
DELISTED
Walgreens Boots Alliance
WBA
| $15.8M | 0.03% |
3,721
+116
| +3% | +$4.93K |
|
369
CALL
Marriott International
MAR
$97.5B
| $15.7M | 0.03% |
1,833
+779
| +74% | +$67.7K |
|
370
PUT
BP
BP
$112B
| $15.7M | 0.03% |
6,713
+1,512
| +29% | +$36.3K |
|
371
CALL
Dollar General
DG
$26.5B
| $15.3M | 0.02% |
805
+509
| +172% | +$92.1K |
|
372
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $15.3M | 0.02% |
471
+270
| +134% | +$81.9K |
|
373
PUT
Union Pacific
UNP
$174B
| $15.2M | 0.02% |
900
-276
| -23% | -$44.2K |
|
374
PUT
RH
RH
$3.31B
| $15.2M | 0.02% |
609
-227
| -27% | -$41.1K |
|
375
PUT
TAL Education Group
TAL
$5.73B
| $15.1M | 0.02% |
2,207
+503
| +30% | +$28.8K |
|
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.