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 | Miscellaneous | 97.74% |
| 2 | Technology | 0.49% |
| 3 | Consumer Discretionary | 0.48% |
| 4 | Communication Services | 0.35% |
| 5 | Healthcare | 0.27% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
301
CALL
Western Digital
WDC
$169B
| $20.4M | 0.03% |
6,100
+2,212
| +57% | +$71.7K |
|
302
CALL
S&P Global
SPGI
$131B
| $20.3M | 0.03% |
616
-3
| -0.5% | -$902 |
|
|
DOCU
303
PUT
DocuSign
DOCU
$13.1B
| $20.3M | 0.03% |
1,176
-36
| -3% | -$4.54K |
|
|
COUP
304
CALL
DELISTED
Coupa Software Incorporated
COUP
| $20.2M | 0.03% |
730
+352
| +93% | +$70.9K |
|
305
AutoZone
AZO
$48.7B
| $20.2M | 0.03% |
17,925
+1,372
| +8% | +$1.45M |
|
306
PUT
TSMC
TSM
$2.22T
| $20.1M | 0.03% |
3,548
-781
| -18% | -$41.2K |
|
307
CALL
DraftKings
DKNG
$11.9B
| $20.1M | 0.03% |
6,050
+4,967
| +459% | +$137K |
|
308
State Street Technology Select Sector SPDR ETF
XLK
$122B
| $20.1M | 0.03% |
384,100
+88,568
| +30% | +$4.17M |
|
309
PUT
ASML
ASML
$659B
| $20M | 0.03% |
544
+45
| +9% | +$14.1K |
|
310
Bank of America
BAC
$438B
| $19.9M | 0.03% |
836,570
+440,865
| +111% | +$10.4M |
|
|
SPLK
311
CALL
DELISTED
Splunk Inc
SPLK
| $19.8M | 0.03% |
994
+386
| +63% | +$61.1K |
|
312
PUT
Inovio Pharmaceuticals
INO
$148M
| $19.7M | 0.03% |
609
+351
| +136% | +$56.4K |
|
313
PUT
MongoDB
MDB
$29.7B
| $19.6M | 0.03% |
868
-326
| -27% | -$60.4K |
|
314
PUT
NXP Semiconductors
NXPI
$57.5B
| $19.5M | 0.03% |
1,714
-820
| -32% | -$82K |
|
315
CALL
RH
RH
$2.8B
| $19.4M | 0.03% |
779
-478
| -38% | -$86.6K |
|
|
316
CALL
Inovio Pharmaceuticals
INO
$148M
| $19.1M | 0.03% |
591
+198
| +50% | +$31.8K |
|
|
317
PUT
AutoZone
AZO
$48.7B
| $19.1M | 0.03% |
169
+6
| +4% | +$6.32K |
|
318
PUT
Hilton Worldwide
HLT
$70B
| $19M | 0.03% |
2,592
+555
| +27% | +$41.2K |
|
319
CALL
Simon Property Group
SPG
$67.8B
| $19M | 0.03% |
2,780
+1,677
| +152% | +$105K |
|
320
Uber
UBER
$155B
| $19M | 0.03% |
610,939
-74,020
| -11% | -$2.31M |
|
321
State Street Financial Select Sector SPDR ETF
XLF
$55.5B
| $19M | 0.03% |
820,344
+820,144
| +410,072% | +$18.6M |
|
|
STZ.B
322
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $19M | 0.03% |
1,085
+400
| +58% | +$66.3K |
|
323
CALL
Clorox
CLX
$11.3B
| $19M | 0.03% |
864
+26
| +3% | +$5.2K |
|
324
PUT
Lyft
LYFT
$6.33B
| $18.9M | 0.03% |
5,724
-2,168
| -27% | -$68.6K |
|
325
PUT
Fastly Inc
FSLY
$3.28B
| $18.8M | 0.03% |
2,214
+1,750
| +377% | +$68.9K |
|
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 1,291 new, 3,426 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 Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 1,291 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.