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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
MFLX
451
DELISTED
MULTI-FINELINE ELECTRONIX INC
MFLX
| $610K | 0.04% |
26,318
+24,672
| +1,499% | +$563K |
|
452
CALL
Freeport-McMoran
FCX
$93.4B
| $609K | 0.04% |
5,311
-1,039
| -16% | -$11.5K |
|
453
ProShares UltraShort Euro
EUO
$35.4M
| $606K | 0.04% |
24,935
+13,596
| +120% | +$320K |
|
454
Direxion Daily MSCI Emerging Markets Bull 3X ETF
EDC
$158M
| $605K | 0.04% |
+11,749
| New | +$571K |
|
455
CALL
Trip.com Group
TCOM
$26.8B
| $605K | 0.04% |
2,044
+185
| +10% | +$8.07K |
|
456
PUT
American Express
AXP
$238B
| $604K | 0.04% |
1,517
+544
| +56% | +$34.5K |
|
457
PUT
CF Industries
CF
$19.6B
| $603K | 0.04% |
1,268
+410
| +48% | +$12.2K |
|
|
APU
458
DELISTED
AmeriGas Partners, L.P.
APU
| $601K | 0.04% |
+12,880
| New | +$565K |
|
459
CALL
Qualcomm
QCOM
$185B
| $593K | 0.04% |
4,136
+82
| +2% | +$4.32K |
|
460
PUT
Signet Jewelers
SIG
$3.52B
| $591K | 0.04% |
764
+519
| +212% | +$52.7K |
|
461
Polaris
PII
$4.22B
| $590K | 0.04% |
7,223
+4,881
| +208% | +$433K |
|
462
PUT
MannKind Corp
MNKD
$1.19B
| $587K | 0.04% |
304
-121
| -28% | -$748 |
|
463
CALL
Bank of America
BAC
$432B
| $586K | 0.04% |
13,740
+4,829
| +54% | +$67.8K |
|
464
Gentex
GNTX
$5.09B
| $585K | 0.04% |
+37,873
| New | +$602K |
|
465
Iovance Biotherapeutics
IOVA
$2.31B
| $585K | 0.04% |
+72,340
| New | +$454K |
|
466
PUT
Tronox
TROX
$1.06B
| $581K | 0.04% |
544
-13
| -2% | -$74 |
|
467
Skyworks Solutions
SWKS
$9.5B
| $579K | 0.04% |
+9,150
| New | +$622K |
|
468
CALL
Tractor Supply
TSCO
$15.4B
| $579K | 0.04% |
1,885
+1,025
| +119% | +$19K |
|
469
Electronic Arts
EA
$52.4B
| $577K | 0.04% |
+7,618
| New | +$536K |
|
470
PUT
Home Depot
HD
$330B
| $571K | 0.04% |
6,669
+3,741
| +128% | +$495K |
|
471
PVH
PVH
$3.69B
| $569K | 0.04% |
+6,041
| New | +$568K |
|
472
CALL
Dollar Tree
DLTR
$23.5B
| $566K | 0.04% |
694
+188
| +37% | +$15.9K |
|
473
CALL
Boeing
BA
$164B
| $564K | 0.04% |
1,485
-458
| -24% | -$59.7K |
|
|
TWTR
474
CALL
DELISTED
Twitter, Inc.
TWTR
| $562K | 0.04% |
5,431
+63
| +1% | +$984 |
|
475
BlackBerry
BB
$5.25B
| $561K | 0.04% |
83,617
+65,623
| +365% | +$459K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.