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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CELG
426
CALL
DELISTED
Celgene Corp
CELG
| $624K | 0.04% |
3,829
+1,080
| +39% | +$117K |
|
427
PUT
Western Digital
WDC
$192B
| $622K | 0.04% |
5,588
-928
| -14% | -$35K |
|
428
PUT
Valero Energy
VLO
$92.3B
| $619K | 0.04% |
2,895
+526
| +22% | +$28.1K |
|
|
JOYY
429
CALL
JOYY Inc
JOYY
$3.65B
| $619K | 0.04% |
1,221
-223
| -15% | -$10.2K |
|
430
CALL
Macy's
M
$6.4B
| $618K | 0.04% |
2,176
-1,224
| -36% | -$44.4K |
|
431
Dell
DELL
$285B
| $615K | 0.04% |
+45,898
| New | +$624K |
|
432
PUT
Hershey
HSY
$35B
| $615K | 0.04% |
1,069
+691
| +183% | +$73.1K |
|
433
PUT
Qualcomm
QCOM
$185B
| $615K | 0.04% |
2,623
-435
| -14% | -$26.5K |
|
434
CALL
Expedia Group
EXPE
$31.3B
| $614K | 0.04% |
1,320
-216
| -14% | -$24.4K |
|
435
Estee Lauder
EL
$29.9B
| $612K | 0.04% |
+6,914
| New | +$630K |
|
436
Silicon Laboratories
SLAB
$7.16B
| $611K | 0.04% |
10,394
+10,212
| +5,611% | +$552K |
|
437
CALL
PayPal
PYPL
$49B
| $607K | 0.04% |
2,756
+559
| +25% | +$21.5K |
|
438
PUT
Novavax
NVAX
$1.3B
| $598K | 0.04% |
136
+109
| +404% | +$14.1K |
|
|
ULTI
439
DELISTED
Ultimate Software Group Inc
ULTI
| $595K | 0.04% |
2,914
+2,473
| +561% | +$522K |
|
440
Alnylam Pharmaceuticals
ALNY
$35.6B
| $593K | 0.04% |
8,756
-5,994
| -41% | -$423K |
|
441
KB Home
KBH
$3.46B
| $589K | 0.04% |
36,556
-4,211
| -10% | -$66.3K |
|
442
CALL
Lowe's Companies
LOW
$115B
| $589K | 0.04% |
2,315
+1,216
| +111% | +$94.6K |
|
443
MiMedx Group
MDXG
$621M
| $587K | 0.04% |
68,416
+5,353
| +8% | +$42.4K |
|
|
BBL
444
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $586K | 0.04% |
19,304
-23,218
| -55% | -$621K |
|
445
CALL
Amgen
AMGN
$198B
| $584K | 0.04% |
1,894
+882
| +87% | +$149K |
|
446
CALL
Comcast
CMCSA
$84B
| $583K | 0.04% |
4,620
-1,342
| -23% | -$44.7K |
|
447
PUT
MannKind Corp
MNKD
$1.19B
| $583K | 0.04% |
258
-46
| -15% | -$203 |
|
448
Chubb
CB
$133B
| $581K | 0.04% |
+4,625
| New | +$587K |
|
|
SLCA
449
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $580K | 0.04% |
+12,476
| New | +$486K |
|
450
CALL
Targa Resources
TRGP
$61.1B
| $579K | 0.04% |
1,363
-230
| -14% | -$9.99K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.