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 | |
|---|---|---|---|---|---|---|
2351
CALL
Charles River Laboratories
CRL
$10.9B
| $802K | ﹤0.01% |
46
-60
| -57% | -$9.58K |
|
2352
Sabre
SABR
$656M
| $801K | ﹤0.01% |
99,409
+11,036
| +12% | +$78.2K |
|
|
AXDX
2353
CALL
DELISTED
Accelerate Diagnostics
AXDX
| $798K | ﹤0.01% |
53
+30
| +130% | +$2.96K |
|
2354
PUT
Barclays
BCS
$94.1B
| $796K | ﹤0.01% |
1,407
-413
| -23% | -$2.15K |
|
2355
PUT
Goodyear
GT
$2.07B
| $796K | ﹤0.01% |
890
-1,758
| -66% | -$13.4K |
|
2356
CALL
Huntington Bancshares
HBAN
$35.1B
| $796K | ﹤0.01% |
882
-277
| -24% | -$2.45K |
|
2357
Corbus Pharmaceuticals
CRBP
$170M
| $794K | ﹤0.01% |
3,155
+2,959
| +1,510% | +$598K |
|
2358
PUT
Exelon
EXC
$48.6B
| $794K | ﹤0.01% |
307
+115
| +60% | +$3.05K |
|
2359
PUT
Honda
HMC
$36.5B
| $794K | ﹤0.01% |
311
+181
| +139% | +$4.4K |
|
2360
PUT
Smith & Wesson
SWBI
$655M
| $794K | ﹤0.01% |
480
+351
| +272% | +$3.26K |
|
2361
CALL
Federated Hermes
FHI
$4.4B
| $793K | ﹤0.01% |
335
+318
| +1,871% | +$7.04K |
|
2362
CALL
SFL Corp
SFL
$1.59B
| $792K | ﹤0.01% |
853
-24
| -3% | -$240 |
|
|
2363
Barclays
BCS
$94.1B
| $791K | ﹤0.01% |
139,817
+68,711
| +97% | +$358K |
|
2364
CALL
Globus Medical
GMED
$10.4B
| $791K | ﹤0.01% |
166
-241
| -59% | -$11.6K |
|
2365
CALL
Healthcare Realty
HR
$7.42B
| $787K | ﹤0.01% |
297
+231
| +350% | +$5.92K |
|
|
CHK
2366
PUT
DELISTED
Chesapeake Energy Corporation
CHK
| $787K | ﹤0.01% |
1,610
+1,605
| +32,100% | +$31.1K |
|
|
HOLX
2367
PUT
DELISTED
Hologic
HOLX
| $786K | ﹤0.01% |
138
-90
| -39% | -$4.42K |
|
2368
PUT
Tapestry
TPR
$28.8B
| $786K | ﹤0.01% |
592
+233
| +65% | +$3.31K |
|
|
DVAX
2369
DELISTED
Dynavax Technologies
DVAX
| $785K | ﹤0.01% |
88,503
+17,860
| +25% | +$90.3K |
|
2370
Cameco
CCJ
$38.3B
| $784K | ﹤0.01% |
76,499
-188,792
| -71% | -$1.89M |
|
2371
CALL
Rollins
ROL
$18.6B
| $784K | ﹤0.01% |
278
+201
| +261% | +$5.38K |
|
2372
PUT
Teradata
TDC
$2.68B
| $784K | ﹤0.01% |
377
-1,459
| -79% | -$31.7K |
|
2373
iShares MSCI ACWI ETF
ACWI
$32.6B
| $783K | ﹤0.01% |
10,627
-159,443
| -94% | -$11.1M |
|
2374
CALL
Hecla Mining
HL
$10.2B
| $783K | ﹤0.01% |
2,397
+503
| +27% | +$1.39K |
|
2375
CALL
Broadridge
BR
$17.2B
| $782K | ﹤0.01% |
62
-77
| -55% | -$8.92K |
|
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.